Atlas of Peculiar Galaxies
Der Atlas of Peculiar Galaxies ist ein astronomischer Katalog. In ihm sind 338 ungewöhnliche Galaxien mit photographischen Aufnahmen aufgeführt.

Geschichte
Der Katalog wurde von Halton Arp in den 1960er Jahren zusammengestellt und 1966 veröffentlicht. Daher wird er auch Arp-Katalog genannt.
Arp suchte in eigenen Arbeiten und Listen anderer Astronomen nach Gruppen von Galaxien und Galaxien ungewöhnlichen Aussehens. Beispielsweise referenziert er Elemente des Atlas and Catalogue of interacting galaxies. Er nahm für jedes Objekt mit dem 5-Meter-Teleskop des Mount-Palomar-Observatoriums unter guten Beobachtungsbedingungen eine photographische Aufnahme im blauen Spektralbereich auf.
Arp gliederte seinen Katalog ungewöhnlicher Galaxien nach rein morphologischen Kriterien in Gruppen.
Bedeutung
Der Arp-Katalog war Ausgangspunkt vieler detaillierter Untersuchungen ungewöhnlicher und wechselwirkender Galaxien, auch wenn den spezifischen morphologischen Einstufungen und einigen zugrundeliegenden Modellvorstellungen Arps heute oft geringere Bedeutung beigemessen wird.
Als Kürzel wird Arp oder APG verwendet.
Die Elemente des Katalogs
APG/Arp | Alias | RA(J2000) | DE(J2000) | Skyhack |
---|---|---|---|---|
1 | NGC 2857 | 09h 24m 55.7s | +49° 20′ 13″ | Skyhack |
2 | UGC 10310 | 16h 15m 59.6s | +47° 02′ 35″ | Skyhack |
3 | MCG-01-57-016 | 22h 36m 21.1s | −2° 56′ 39″ | Skyhack |
4 | MCG-02-05-050 | 01h 48m 28.3s | −12° 22′ 04″ | Skyhack |
5 | NGC 3664 | 11h 24m 14.7s | +3° 19′ 06″ | Skyhack |
6 | NGC 2537 | 08h 13m 13.1s | +45° 59′ 32″ | Skyhack |
7 | PGC 24836 | 08h 50m 29.5s | −16° 36′ 46″ | Skyhack |
8 | NGC 497 | 01h 22m 26.1s | −0° 51′ 36″ | Skyhack |
9 | NGC 2523 | 08h 15m 02.4s | +73° 36′ 30″ | Skyhack |
10 | UGC 1775 | 02h 18m 10.5s | +5° 38′ 16″ | Skyhack |
11 | UGC 717 | 01h 09m 29.3s | +14° 20′ 34″ | Skyhack |
12 | NGC 2608 | 08h 35m 13.4s | +28° 34′ 45″ | Skyhack |
13 | NGC 7448 | 23h 00m 05.3s | +15° 58′ 40″ | Skyhack |
14 | NGC 7314 | 22h 35m 45.4s | −26° 02′ 39″ | Skyhack |
15 | NGC 7393 | 22h 51m 33.5s | −5° 33′ 26″ | Skyhack |
16 | Messier 66 | 11h 20m 09.9s | +13° 01′ 08″ | Skyhack |
17 | UGC 3972 | 07h 44m 54.7s | +73° 47′ 39″ | Skyhack |
18 | NGC 4088 | 12h 05m 31.3s | +50° 31′ 59″ | Skyhack |
19 | NGC 145 | 00h 31m 43.8s | −5° 09′ 04″ | Skyhack |
20 | UGC 3014 | 04h 19m 57.6s | +2° 05′ 16″ | Skyhack |
21 | MCG+05-26-047 | 11h 04m 49.9s | +30° 05′ 17″ | Skyhack |
22 | NGC 4027 | 11h 59m 32.2s | −19° 16′ 01″ | Skyhack |
23 | NGC 4618 | 12h 41m 32.1s | +41° 09′ 08″ | Skyhack |
24 | NGC 3445 | 10h 54m 37.9s | +56° 59′ 24″ | Skyhack |
25 | NGC 2276 | 07h 27m 57.0s | +85° 46′ 27″ | Skyhack |
26 | Messier 101 | 14h 03m 09.7s | +54° 20′ 23″ | Skyhack |
27 | NGC 3631 | 11h 21m 05.5s | +53° 11′ 08″ | Skyhack |
28 | NGC 7678 | 23h 28m 36.0s | +22° 24′ 55″ | Skyhack |
29 | NGC 6946 | 20h 34m 55.9s | +60° 08′ 15″ | Skyhack |
30 | NGC 6365 | 17h 22m 47.4s | +62° 09′ 23″ | Skyhack |
31 | IC 167 | 01h 51m 03.7s | +21° 53′ 53″ | Skyhack |
32 | UGC 10770 | 17h 12m 56.1s | +59° 19′ 57″ | Skyhack |
33 | UGC 8613 (?) | 13h 37m 36.4s | +6° 25′ 52″ | Skyhack |
34 | NGC 4615 | 12h 41m 28.8s | +26° 04′ 08″ | Skyhack |
35 | UGC 212 | 00h 22m 14.2s | −1° 24′ 01″ | Skyhack |
36 | UGC 8548 | 13h 34m 16.5s | +31° 25′ 48″ | Skyhack |
37 | NGC 1068 | 02h 42m 38.2s | −0° 00′ 22″ | Skyhack |
38 | NGC 6412 | 17h 29m 02.0s | +75° 43′ 41″ | Skyhack |
39 | NGC 1347 | 03h 29m 49.3s | −22° 15′ 52″ | Skyhack |
40 | IC 4271 | 13h 29m 26.7s | +37° 24′ 43″ | Skyhack |
41 | NGC 1232 | 03h 09m 45.2s | −20° 34′ 12″ | Skyhack |
42 | NGC 5829 | 15h 02m 43.9s | +23° 19′ 59″ | Skyhack |
43 | IC 607 | 10h 23m 55.2s | +16° 43′ 52″ | Skyhack |
44 | IC 609 | 10h 25m 37.7s | −2° 12′ 10″ | Skyhack |
45 | UGC 9178 | 14h 19m 45.1s | +51° 51′ 47″ | Skyhack |
46 | UGC 12665 | 23h 33m 41.6s | +30° 01′ 57″ | Skyhack |
47 | PGC 52803 | 14h 47m 11.2s | +18° 51′ 31″ | Skyhack |
48 | PGC 4789 | 01h 20m 05.2s | +12° 20′ 26″ | Skyhack |
49 | NGC 5665 | 14h 32m 22.8s | +8° 04′ 06″ | Skyhack |
50 | IC 1520 | 23h 57m 56.4s | −14° 01′ 59″ | Skyhack |
51 | PGC 475 | 00h 05m 44.1s | −13° 25′ 59″ | Skyhack |
52 | PGC 17109 | 05h 19m 34.8s | +3° 43′ 48″ | Skyhack |
53 | NGC 3290 | 10h 35m 03.8s | −17° 09′ 20″ | Skyhack |
54 | PGC 9113 | 02h 24m 30.3s | −4° 38′ 53″ | Skyhack |
55 | UGC 4881 | 09h 15m 52.2s | +44° 19′ 28″ | Skyhack |
56 | UGC 1432 | 01h 57m 14.3s | +17° 12′ 45″ | Skyhack |
57 | PGC 46225 | 13h 16m 40.9s | +14° 25′ 31″ | Skyhack |
58 | UGC 4457 | 08h 31m 55.3s | +19° 12′ 52″ | Skyhack |
59 | NGC 341 | 01h 00m 30.6s | −9° 09′ 19″ | Skyhack |
60 | PGC 1762846, SDSS J131446.02+260629.8 | 13h 14m 38.0s | +26° 06′ 30″ | Skyhack |
61 | UGC 3104 | 04h 36m 42.8s | −2° 17′ 24″ | Skyhack |
62 | UGC 6865 | 11h 53m 39.5s | +43° 35′ 59″ | Skyhack |
63 | NGC 2944 | 09h 39m 11.0s | +32° 18′ 50″ | Skyhack |
64 | UGC 9503 | 14h 45m 10.9s | +19° 28′ 27″ | Skyhack |
65 | NGC 90, NGC 93 | 00h 21m 51.8s | +22° 22′ 59″ | Skyhack |
66 | UGC 10396 | 16h 26m 52.0s | +51° 32′ 02″ | Skyhack |
67 | UGC 892 | 01h 21m 20.1s | −0° 32′ 35″ | Skyhack |
68 | NGC 7757 | 23h 48m 32.1s | +4° 07′ 00″ | Skyhack |
69 | NGC 5579 | 14h 20m 28.1s | +35° 10′ 47″ | Skyhack |
70 | UGC 934 | 01h 23m 28.7s | +30° 46′ 23″ | Skyhack |
71 | NGC 6045 | 16h 05m 09.1s | +17° 41′ 10″ | Skyhack |
72 | NGC 5994, NGC 5996 | 15h 47m 03.5s | +17° 54′ 29″ | Skyhack |
73 | IC 1222 | 16h 35m 05.3s | +46° 13′ 21″ | Skyhack |
74 | UGC 1626 | 02h 08m 14.9s | +41° 28′ 31″ | Skyhack |
75 | NGC 702 | 01h 51m 18.9s | −4° 03′ 07″ | Skyhack |
76 | NGC 4569 | 12h 36m 48.8s | +13° 09′ 06″ | Skyhack |
77 | NGC 1097 | 02h 46m 28.7s | −30° 16′ 29″ | Skyhack |
78 | NGC 772 | 01h 59m 21.1s | +19° 00′ 43″ | Skyhack |
79 | PGC 50584 | 14h 09m 55.5s | +17° 37′ 32″ | Skyhack |
80 | NGC 2633 | 08h 48m 17.9s | +74° 07′ 20″ | Skyhack |
81 | NGC 6621, NGC 6622 | 18h 13m 15.8s | +68° 18′ 35″ | Skyhack |
82 | NGC 2535, NGC 2536 | 08h 11m 12.2s | +25° 12′ 36″ | Skyhack |
83 | NGC 3799, NGC 3800 | 11h 40m 09.3s | +15° 19′ 01″ | Skyhack |
84 | NGC 5394, NGC 5395 | 13h 58m 41.1s | +37° 26′ 17″ | Skyhack |
85 | NGC 5194, NGC 5195 | 13h 29m 51.8s | +47° 11′ 44″ | Skyhack |
86 | NGC 7752, NGC 7753 | 23h 47m 07.0s | +29° 29′ 00″ | Skyhack |
87 | NGC 3808 | 11h 40m 57.7s | +22° 27′ 01″ | Skyhack |
88 | PGC 4728 | 01h 19m 05.2s | +12° 28′ 27″ | Skyhack |
89 | NGC 2648 | 08h 42m 40.1s | +14° 17′ 30″ | Skyhack |
90 | NGC 5930 | 15h 26m 27.4s | +42° 39′ 46″ | Skyhack |
91 | NGC 5953, NGC 5954 | 15h 34m 35.5s | +15° 12′ 02″ | Skyhack |
92 | NGC 7603 | 23h 18m 50.3s | +0° 14′ 51″ | Skyhack |
93 | NGC 7284, NGC 7285 | 22h 28m 39.6s | −24° 50′ 47″ | Skyhack |
94 | NGC 3226, NGC 3227 | 10h 23m 26.3s | +19° 53′ 52″ | Skyhack |
95 | IC 4461 | 14h 35m 07.8s | +26° 31′ 10″ | Skyhack |
96 | UGC 3528A, UGC 3636A | 07h 03m 10.1s | +86° 33′ 32″ | Skyhack |
97 | UGC 7085A | 12h 06m 01.7s | +31° 03′ 59″ | Skyhack |
98 | UGC 1095 | 01h 32m 12.0s | +32° 06′ 14″ | Skyhack |
99 | NGC 7550 | 23h 15m 17.6s | +18° 57′ 49″ | Skyhack |
100 | IC 18 | 00h 28m 31.3s | −11° 35′ 03″ | Skyhack |
101 | UGC 10164 | 16h 04m 29.0s | +14° 52′ 08″ | Skyhack |
102 | UGC 10814 | 17h 19m 28.8s | +49° 03′ 13″ | Skyhack |
103 | UGC 10586 | 16h 49m 41.5s | +45° 26′ 57″ | Skyhack |
104 | NGC 5216, NGC 5218 | 13h 32m 08.0s | +62° 42′ 46″ | Skyhack |
105 | NGC 3561 | 11h 11m 13.0s | +28° 41′ 13″ | Skyhack |
106 | NGC 4211, NGC 4211A | 12h 15m 30.9s | +28° 11′ 00″ | Skyhack |
107 | UGC 5984 | 10h 52m 15.1s | +30° 05′ 26″ | Skyhack |
108 | PGC 11491, PGC 11493 | 03h 03m 14.5s | −22° 11′ 59″ | Skyhack |
109 | UGC 10053 | 15h 48m 08.5s | +69° 25′ 33″ | Skyhack |
110 | PGC 69956 | 22h 54m 05.4s | −15° 12′ 24″ | Skyhack |
111 | NGC 5421 | 14h 01m 42.7s | +33° 49′ 21″ | Skyhack |
112 | NGC 7805, NGC 7806 | 00h 01m 26.4s | +31° 27′ 01″ | Skyhack |
113 | NGC 70 | 00h 18m 28.1s | +30° 04′ 59″ | Skyhack |
114 | NGC 2276, NGC 2300 | 07h 27m 57.0s | +85° 46′ 27″ | Skyhack |
115 | UGC 6678 | 11h 43m 03.8s | +26° 16′ 01″ | Skyhack |
116 | NGC 4647, NGC 4649 | 12h 43m 30.8s | +11° 35′ 09″ | Skyhack |
117 | IC 982, IC 983 | 14h 10m 01.4s | +17° 40′ 32″ | Skyhack |
118 | NGC 1143, NGC 1144 | 02h 55m 08.2s | −0° 09′ 44″ | Skyhack |
119 | UGC 849 | 01h 19m 29.3s | +12° 27′ 26″ | Skyhack |
120 | NGC 4438 | 12h 27m 49.2s | +13° 00′ 03″ | Skyhack |
121 | PGC 3547, PGC 3553 | 00h 59m 25.4s | −4° 47′ 18″ | Skyhack |
122 | NGC 6039 | 16h 04m 19.9s | +27° 41′ 08″ | Skyhack |
123 | NGC 1888 | 05h 22m 30.2s | −11° 29′ 20″ | Skyhack |
124 | NGC 6361 | 17h 18m 52.3s | +60° 36′ 12″ | Skyhack |
125 | UGC 10491 | 16h 38m 10.6s | +41° 55′ 29″ | Skyhack |
126 | UGC 1449 | 01h 58m 09.3s | +3° 05′ 44″ | Skyhack |
127 | NGC 191 | 00h 38m 55.2s | −9° 00′ 07″ | Skyhack |
128 | UGC 827 | 01h 17m 35.7s | +14° 42′ 28″ | Skyhack |
129 | UGC 5146 | 09h 39m 29.0s | +32° 20′ 50″ | Skyhack |
130 | IC 5378 | 00h 02m 56.4s | +16° 39′ 01″ | Skyhack |
131 | PGC 10561, PGC 10564 | 02h 47m 19.2s | −14° 46′ 31″ | Skyhack |
132 | PGC 34639 | 11h 19m 25.9s | −3° 05′ 52″ | Skyhack |
133 | NGC 541 | 01h 25m 43.9s | −1° 22′ 39″ | Skyhack |
134 | NGC 4472 | 12h 29m 49.6s | +8° 00′ 04″ | Skyhack |
135 | NGC 1023 | 02h 40m 23.1s | +39° 04′ 41″ | Skyhack |
136 | NGC 5820 | 14h 58m 41.7s | +53° 52′ 52″ | Skyhack |
137 | NGC 2914 | 09h 34m 06.6s | +10° 05′ 58″ | Skyhack |
138 | NGC 4015 | 11h 58m 44.5s | +25° 02′ 59″ | Skyhack |
139 | PGC 45463 | 13h 07m 26.5s | +26° 43′ 24″ | Skyhack |
140 | NGC 274, NGC 275 | 00h 51m 01.2s | −7° 03′ 13″ | Skyhack |
141 | UGC 3730 | 07h 14m 28.9s | +73° 28′ 53″ | Skyhack |
142 | NGC 2936, NGC 2937 | 09h 37m 45.4s | +2° 44′ 52″ | Skyhack |
143 | NGC 2444, NGC 2445 | 07h 47m 01.5s | +39° 06′ 32″ | Skyhack |
144 | NGC 7828, NGC 7829 | 00h 05m 56.1s | −13° 23′ 59″ | Skyhack |
145 | UGC 1840 | 02h 22m 52.6s | +41° 12′ 09″ | Skyhack |
146 | PGC 509, PGC 510 | 00h 06m 32.2s | −6° 43′ 59″ | Skyhack |
147 | IC 298 | 03h 11m 08.9s | +1° 18′ 46″ | Skyhack |
148 | PGC 33423 | 11h 03m 52.8s | +40° 50′ 17″ | Skyhack |
149 | IC 803 | 12h 39m 30.3s | +16° 36′ 07″ | Skyhack |
150 | NGC 7609 | 23h 19m 31.1s | +9° 29′ 52″ | Skyhack |
151 | Arp 151 | 11h 25m 34.9s | +54° 23′ 06″ | Skyhack |
152 | NGC 4486 | 12h 30m 49.1s | +12° 24′ 04″ | Skyhack |
153 | NGC 5128 | 13h 25m 21.7s | −43° 00′ 21″ | Skyhack |
154 | NGC 1316 | 03h 22m 38.7s | −37° 13′ 37″ | Skyhack |
155 | NGC 3656 | 11h 23m 35.2s | +53° 51′ 07″ | Skyhack |
156 | Arp 156 | 10h 42m 51.1s | +77° 27′ 34″ | Skyhack |
157 | NGC 520 | 01h 24m 33.2s | +3° 47′ 22″ | Skyhack |
158 | NGC 523 | 01h 25m 12.0s | +34° 01′ 21″ | Skyhack |
159 | NGC 4747 | 12h 51m 46.0s | +25° 47′ 14″ | Skyhack |
160 | NGC 4194 | 12h 14m 05.0s | +54° 32′ 00″ | Skyhack |
161 | Arp 161 | 11h 42m 08.3s | +0° 21′ 01″ | Skyhack |
162 | NGC 3414 | 10h 51m 20.7s | +27° 59′ 26″ | Skyhack |
163 | NGC 4670 | 12h 45m 16.3s | +27° 07′ 10″ | Skyhack |
164 | NGC 455 | 01h 15m 57.4s | +5° 11′ 29″ | Skyhack |
165 | Arp 165 | 07h 36m 38.1s | +17° 52′ 56″ | Skyhack |
166 | NGC 750, NGC 751 | 01h 57m 33.0s | +33° 12′ 45″ | Skyhack |
167 | NGC 2672 | 08h 49m 24.6s | +19° 05′ 17″ | Skyhack |
168 | NGC 221 | 00h 42m 44.6s | +40° 51′ 51″ | Skyhack |
169 | NGC 7236, NGC 7237 | 22h 14m 45.9s | +13° 50′ 58″ | Skyhack |
170 | NGC 7578 | 23h 17m 17.8s | +18° 41′ 50″ | Skyhack |
171 | Arp 171 | 14h 40m 00.7s | +3° 28′ 18″ | Skyhack |
172 | Arp 172 | 16h 05m 33.1s | +17° 38′ 11″ | Skyhack |
173 | Arp 173 | 14h 51m 27.8s | +9° 21′ 38″ | Skyhack |
174 | Arp 174 | 09h 58m 25.5s | +28° 50′ 23″ | Skyhack |
175 | IC 3481, IC 3483 | 12h 32m 55.2s | +11° 24′ 05″ | Skyhack |
176 | NGC 4933 | 13h 03m 46.5s | −11° 29′ 39″ | Skyhack |
177 | Arp 177 | 14h 55m 49.6s | +24° 35′ 46″ | Skyhack |
178 | Arp 178 | 14h 24m 09.9s | +34° 50′ 53″ | Skyhack |
179 | Arp 179 | 03h 01m 47.9s | −4° 41′ 57″ | Skyhack |
180 | Arp 180 | 04h 53m 23.0s | −4° 47′ 06″ | Skyhack |
181 | NGC 3212, NGC 3215 | 10h 27m 14.4s | +79° 50′ 49″ | Skyhack |
182 | Arp 182 | 23h 27m 49.4s | +8° 46′ 55″ | Skyhack |
183 | Arp 183 | 13h 34m 58.5s | +31° 23′ 49″ | Skyhack |
184 | NGC 1961 | 05h 42m 18.6s | +69° 25′ 51″ | Skyhack |
185 | NGC 6217 | 16h 32m 21.6s | +78° 12′ 18″ | Skyhack |
186 | NGC 1614 | 04h 34m 20.6s | −8° 35′ 19″ | Skyhack |
187 | Arp 187 | 05h 04m 55.2s | −10° 14′ 35″ | Skyhack |
188 | Arp 188 | 16h 05m 41.0s | +55° 32′ 12″ | Skyhack |
189 | NGC 4651 | 12h 43m 42.1s | +16° 23′ 09″ | Skyhack |
190 | Arp 190 | 02h 50m 14.4s | +12° 53′ 24″ | Skyhack |
191 | Arp 191 | 11h 07m 17.4s | +18° 26′ 15″ | Skyhack |
192 | NGC 3303 | 10h 37m 01.0s | +18° 07′ 39″ | Skyhack |
193 | IC 883 | 13h 20m 35.0s | +34° 07′ 35″ | Skyhack |
194 | Arp 194 | 11h 57m 44.7s | +36° 25′ 59″ | Skyhack |
195 | Arp 195 | 08h 53m 52.9s | +35° 08′ 08″ | Skyhack |
196 | Arp 196 | 13h 14m 26.1s | +26° 08′ 30″ | Skyhack |
197 | IC 701 | 11h 30m 58.2s | +20° 28′ 04″ | Skyhack |
198 | Arp 198 | 10h 59m 47.7s | +17° 39′ 20″ | Skyhack |
199 | NGC 5544, NGC 5545 | 14h 17m 03.6s | +36° 33′ 42″ | Skyhack |
200 | NGC 1134 | 02h 53m 38.6s | +13° 00′ 18″ | Skyhack |
201 | Arp 201 | 00h 23m 38.3s | −0° 30′ 02″ | Skyhack |
202 | NGC 2719 | 09h 00m 16.8s | +35° 43′ 56″ | Skyhack |
203 | NGC 3712 | 11h 31m 41.1s | +28° 30′ 04″ | Skyhack |
204 | Arp 204 | 13h 23m 02.0s | +84° 29′ 38″ | Skyhack |
205 | NGC 3448 | 10h 54m 42.2s | +54° 18′ 24″ | Skyhack |
206 | NGC 3432 | 10h 52m 29.1s | +36° 38′ 25″ | Skyhack |
207 | Arp 207 | 09h 30m 50.6s | +76° 28′ 04″ | Skyhack |
208 | Arp 208 | 16h 50m 50.9s | +47° 14′ 00″ | Skyhack |
209 | NGC 6052 | 16h 05m 19.1s | +20° 33′ 10″ | Skyhack |
210 | NGC 1569 | 04h 31m 45.1s | +64° 51′ 49″ | Skyhack |
211 | Arp 211 | 12h 37m 15.2s | +38° 45′ 07″ | Skyhack |
212 | NGC 7625 | 23h 20m 30.1s | +17° 13′ 52″ | Skyhack |
213 | IC 356 | 04h 07m 44.0s | +69° 49′ 46″ | Skyhack |
214 | NGC 3718 | 11h 32m 38.8s | +53° 04′ 03″ | Skyhack |
215 | NGC 2782 | 09h 14m 06.8s | +40° 06′ 31″ | Skyhack |
216 | NGC 7679, NGC 7682 | 23h 28m 44.0s | +3° 31′ 55″ | Skyhack |
217 | NGC 3310 | 10h 38m 45.3s | +53° 30′ 37″ | Skyhack |
218 | Arp 218 | 15h 53m 38.8s | +18° 36′ 44″ | Skyhack |
219 | Arp 219 | 03h 39m 55.0s | −2° 07′ 13″ | Skyhack |
220 | IC 4553 | 15h 34m 54.3s | +23° 29′ 03″ | Skyhack |
221 | Arp 221 | 09h 36m 27.6s | −11° 19′ 06″ | Skyhack |
222 | NGC 7727 | 23h 39m 51.1s | −12° 17′ 01″ | Skyhack |
223 | NGC 7585 | 23h 17m 56.9s | −4° 39′ 09″ | Skyhack |
224 | NGC 3921 | 11h 51m 04.7s | +55° 04′ 59″ | Skyhack |
225 | NGC 2655 | 08h 55m 58.5s | +78° 14′ 06″ | Skyhack |
226 | NGC 7252 | 22h 20m 46.1s | −24° 40′ 55″ | Skyhack |
227 | NGC 474 | 01h 20m 03.1s | +3° 25′ 26″ | Skyhack |
228 | IC 162 | 01h 48m 53.6s | +10° 31′ 56″ | Skyhack |
229 | NGC 507, NGC 508 | 01h 23m 35.5s | +33° 15′ 22″ | Skyhack |
230 | Arp 230 | 00h 46m 18.4s | −13° 27′ 10″ | Skyhack |
231 | Arp 231 | 00h 43m 31.7s | −4° 07′ 09″ | Skyhack |
232 | Arp 232 | 09h 33m 48.6s | +10° 07′ 58″ | Skyhack |
233 | Arp 233 | 10h 32m 17.4s | +54° 22′ 43″ | Skyhack |
234 | NGC 3738 | 11h 35m 50.4s | +54° 31′ 03″ | Skyhack |
235 | NGC 14 | 00h 08m 44.7s | +15° 49′ 01″ | Skyhack |
236 | IC 1623 | 01h 07m 40.6s | −17° 28′ 24″ | Skyhack |
237 | Arp 237 | 09h 27m 43.7s | +12° 17′ 08″ | Skyhack |
238 | Arp 238 | 13h 14m 32.2s | +62° 08′ 30″ | Skyhack |
239 | NGC 5278, NGC 5279 | 13h 41m 37.2s | +55° 39′ 56″ | Skyhack |
240 | NGC 5257, NGC 5258 | 13h 39m 56.0s | +0° 49′ 54″ | Skyhack |
241 | Arp 241 | 14h 37m 41.3s | +30° 27′ 15″ | Skyhack |
242 | NGC 4676 | 12h 46m 09.6s | +30° 44′ 11″ | Skyhack |
243 | NGC 2623 | 08h 38m 23.3s | +25° 45′ 39″ | Skyhack |
244 | NGC 4038, NGC 4039 | 12h 01m 50.4s | −18° 52′ 01″ | Skyhack |
245 | NGC 2992, NGC 2993 | 09h 45m 44.6s | −14° 19′ 20″ | Skyhack |
246 | Arp 246 | 00h 06m 56.5s | +8° 22′ 01″ | Skyhack |
247 | IC 2338, IC 2339 | 08h 23m 39.0s | +21° 20′ 09″ | Skyhack |
248 | Arp 248 | 11h 46m 26.1s | −3° 36′ 00″ | Skyhack |
249 | Arp 249 | 00h 00m 26.3s | +23° 00′ 01″ | Skyhack |
250 | Arp 250 | 07h 35m 46.4s | +35° 21′ 58″ | Skyhack |
251 | Arp 251 | 00h 53m 36.0s | −13° 52′ 14″ | Skyhack |
252 | Arp 252 | 09h 44m 48.3s | −19° 41′ 19″ | Skyhack |
253 | Arp 253 | 09h 43m 24.2s | −5° 17′ 17″ | Skyhack |
254 | Arp 254 | 15h 21m 30.3s | −7° 21′ 25″ | Skyhack |
255 | Arp 255 | 09h 53m 05.2s | +7° 52′ 30″ | Skyhack |
256 | Arp 256 | 00h 18m 43.7s | −10° 22′ 00″ | Skyhack |
257 | Arp 257 | 08h 51m 37.1s | −2° 21′ 48″ | Skyhack |
258 | Arp 258 | 02h 39m 04.7s | +18° 22′ 44″ | Skyhack |
259 | NGC 1741 | 05h 01m 41.4s | −4° 15′ 27″ | Skyhack |
260 | Arp 260 | 12h 13m 37.6s | +16° 08′ 00″ | Skyhack |
261 | Arp 261 | 14h 49m 25.1s | −10° 09′ 26″ | Skyhack |
262 | Arp 262 | 23h 56m 50.1s | +16° 49′ 01″ | Skyhack |
263 | NGC 3239 | 10h 25m 01.3s | +17° 09′ 51″ | Skyhack |
264 | NGC 3104 | 10h 03m 49.2s | +40° 43′ 16″ | Skyhack |
265 | IC 3862 | 12h 53m 55.5s | +36° 05′ 15″ | Skyhack |
266 | NGC 4861 | 12h 58m 55.3s | +34° 52′ 18″ | Skyhack |
267 | Arp 267 | 10h 36m 41.1s | +31° 33′ 39″ | Skyhack |
268 | Arp 268 | 08h 19m 01.2s | +70° 44′ 21″ | Skyhack |
269 | NGC 4485, NGC 4490 | 12h 30m 45.6s | +41° 38′ 04″ | Skyhack |
270 | NGC 3395, NGC 3396 | 10h 49m 52.2s | +32° 59′ 27″ | Skyhack |
271 | Arp 271 | 14h 03m 22.4s | −6° 03′ 37″ | Skyhack |
272 | NGC 6054 | 16h 05m 21.0s | +17° 47′ 10″ | Skyhack |
273 | Arp 273 | 02h 21m 27.2s | +39° 22′ 12″ | Skyhack |
274 | Arp 274 | 14h 34m 59.9s | +5° 21′ 10″ | Skyhack |
275 | NGC 2881 | 09h 25m 51.0s | −11° 59′ 49″ | Skyhack |
276 | NGC 935 | 02h 27m 46.8s | +19° 35′ 02″ | Skyhack |
277 | NGC 4809, NGC 4810 | 12h 55m 49.9s | +2° 32′ 16″ | Skyhack |
278 | NGC 7253 | 22h 19m 28.7s | +29° 23′ 04″ | Skyhack |
279 | NGC 1253 | 03h 14m 12.8s | −2° 48′ 20″ | Skyhack |
280 | NGC 3769 | 11h 37m 48.7s | +47° 54′ 02″ | Skyhack |
281 | NGC 4631 | 12h 42m 15.7s | +32° 32′ 09″ | Skyhack |
282 | NGC 169 | 00h 36m 53.1s | +23° 59′ 54″ | Skyhack |
283 | NGC 2798, NGC 2799 | 09h 17m 37.9s | +41° 57′ 25″ | Skyhack |
284 | NGC 7714, NGC 7715 | 23h 36m 14.1s | +2° 09′ 58″ | Skyhack |
285 | NGC 2854, NGC 2856 | 09h 24m 07.8s | +49° 15′ 14″ | Skyhack |
286 | NGC 5560, NGC 5566, NGC 5569 | 14h 20m 18.7s | +3° 57′ 47″ | Skyhack |
287 | Arp 287 | 09h 02m 46.0s | +25° 55′ 51″ | Skyhack |
288 | NGC 5221, NGC 5222 | 13h 34m 58.3s | +13° 48′ 49″ | Skyhack |
289 | NGC 3981 | 11h 56m 14.0s | −19° 54′ 01″ | Skyhack |
290 | IC 195, IC 196 | 02h 03m 55.6s | +14° 43′ 37″ | Skyhack |
291 | Arp 291 | 10h 42m 47.5s | +13° 27′ 33″ | Skyhack |
292 | IC 575 | 09h 54m 35.8s | −6° 51′ 33″ | Skyhack |
293 | Arp 293 | 16h 58m 34.2s | +58° 55′ 20″ | Skyhack |
294 | NGC 3786, NGC 3788 | 11h 39m 40.6s | +31° 55′ 01″ | Skyhack |
295 | Arp 295 | 23h 41m 26.5s | −3° 34′ 01″ | Skyhack |
296 | Arp 296 | 11h 28m 47.4s | +58° 32′ 05″ | Skyhack |
297 | NGC 5754, NGC 5755 | 14h 45m 17.1s | +38° 44′ 28″ | Skyhack |
298 | NGC 7469 | 23h 03m 12.8s | +8° 51′ 42″ | Skyhack |
299 | Arp 299 | 11h 28m 59.4s | +58° 33′ 05″ | Skyhack |
300 | Arp 300 | 09h 27m 59.3s | +68° 24′ 08″ | Skyhack |
301 | Arp 301 | 11h 09m 54.3s | +24° 17′ 14″ | Skyhack |
302 | Arp 302 | 14h 57m 01.5s | +24° 36′ 48″ | Skyhack |
303 | Arp 303 | 09h 46m 15.5s | +3° 03′ 39″ | Skyhack |
304 | NGC 1241, NGC 1242 | 03h 11m 15.6s | −8° 55′ 15″ | Skyhack |
305 | NGC 4016, NGC 4017 | 11h 58m 32.5s | +27° 33′ 59″ | Skyhack |
306 | Arp 306 | 01h 32m 33.5s | +4° 36′ 14″ | Skyhack |
307 | NGC 2872, NGC 2874 | 09h 25m 49.4s | +11° 26′ 11″ | Skyhack |
308 | NGC 545, NGC 547 | 01h 25m 43.9s | −1° 21′ 39″ | Skyhack |
309 | NGC 942, NGC 943 | 02h 28m 21.6s | −10° 49′ 59″ | Skyhack |
310 | IC 1259 | 17h 27m 21.5s | +58° 31′ 34″ | Skyhack |
311 | IC 1259 | 17h 27m 21.5s | +58° 31′ 34″ | Skyhack |
312 | Arp 312 | 16h 49m 51.7s | +46° 41′ 58″ | Skyhack |
313 | NGC 3994, NGC 3995 | 11h 57m 38.6s | +32° 16′ 59″ | Skyhack |
314 | Arp 314 | 22h 57m 51.0s | −3° 47′ 21″ | Skyhack |
315 | NGC 2832 | 09h 19m 49.6s | +33° 46′ 21″ | Skyhack |
316 | NGC 3190 | 10h 18m 09.3s | +21° 49′ 58″ | Skyhack |
317 | NGC 3627 | 11h 20m 09.9s | +13° 00′ 08″ | Skyhack |
318 | NGC 833, NGC 835, NGC 838, NGC 839 | 02h 09m 22.4s | −10° 07′ 31″ | Skyhack |
319 | NGC 7317, NGC 7318, NGC 7319 | 22h 35m 52.6s | +33° 56′ 20″ | Skyhack |
320 | Arp 320 | 11h 37m 51.9s | +22° 01′ 02″ | Skyhack |
321 | Arp 321 | 09h 38m 54.3s | −4° 50′ 10″ | Skyhack |
322 | Arp 322 | 11h 32m 44.8s | +52° 57′ 03″ | Skyhack |
323 | NGC 7783 | 23h 54m 08.3s | +0° 23′ 01″ | Skyhack |
324 | Arp 324 | 16h 02m 10.3s | +15° 57′ 03″ | Skyhack |
325 | Arp 325 | 22h 03m 21.9s | −21° 03′ 16″ | Skyhack |
326 | Arp 326 | 13h 37m 36.4s | +6° 25′ 52″ | Skyhack |
327 | NGC 1875 | 05h 21m 48.9s | +6° 40′ 42″ | Skyhack |
328 | Arp 328 | 14h 47m 53.0s | +19° 03′ 32″ | Skyhack |
329 | Arp 329 | 11h 32m 10.7s | +70° 48′ 04″ | Skyhack |
330 | Arp 330 | 16h 48m 58.9s | +53° 23′ 56″ | Skyhack |
331 | NGC 383 | 01h 07m 21.6s | +32° 24′ 36″ | Skyhack |
332 | IC 1892 | 03h 08m 31.8s | −23° 03′ 09″ | Skyhack |
333 | NGC 1024 | 02h 39m 13.1s | +10° 50′ 43″ | Skyhack |
334 | Arp 334 | 13h 30m 28.8s | +31° 37′ 44″ | Skyhack |
335 | NGC 3509 | 11h 03m 21.1s | +4° 46′ 18″ | Skyhack |
336 | NGC 2685 | 08h 56m 08.2s | +58° 48′ 04″ | Skyhack |
337 | NGC 3034 | 09h 56m 04.8s | +69° 42′ 26″ | Skyhack |
338 | Arp 338 | 10h 10m 59.7s | −7° 54′ 54″ | Skyhack |
Galerie
Die Originalbilder von Halton Arp mit dem 5-Meter-Teleskop vom Mount Palomar sind als Link ( [1]) angegeben, da sie aus Urheberrechtsgründen nicht in die Wikipedia eingebunden werden können.
Spiralgalaxien mit geringer Flächenhelligkeit (1–6)
Spiralgalaxien mit gespaltenen Armen (7–12)
- (c) ESA/Hubble, CC BY 4.0
Spiralgalaxien mit abgetrennten Abschnitten (13–18)
Dreiarmige Spiralgalaxien (19–21)
Einarmige Spiralgalaxien (22–24)
Spiralgalaxien mit einem ausgeprägten Arm (25–30)
- (c) ESA/Hubble, CC BY 4.0
Spiralgalaxien mit der Form eines Integralzeichens (31–36)
Spiralgalaxien mit einem Begleiter niedriger Flächenhelligkeit auf einem Arm (37–48)
Spiralgalaxien mit einem kleinen Begleiter hoher Flächenhelligkeit auf einem Arm (49–78)
- (c) ESA/Hubble, CC BY 4.0
Spiralgalaxien mit einem großen Begleiter hoher Flächenhelligkeit auf einem Arm (79–91)
- (c) ESA/Hubble & NASA, J. Dalcanton; Acknowledgement: J. Schmidt, CC BY 4.0
Spiralgalaxien mit einem elliptischen Begleiter auf einem Arm (92–101)
- Arp 101 (UGC 10164 und UGC 10169)
Elliptische Galaxien mit Verbindung zu Spiralen (102–108)
Elliptische Galaxien, die Spiralarme abstoßen (109–112)
Elliptische Galaxien nahe bei Spiralgalaxien und diese störend (113–132)
Elliptische Galaxien mit nahen Fragmenten (133–136)
Elliptische Galaxien mit ausströmendem Material (137–145)
- (c) Credit: NASA, ESA, STScI, and J. Dalcanton (Center for Computational Astrophysics/Flatiron Inst., UWashington), CC BY 4.0
Galaxien mit assoziierten Ringen (146–148)
Galaxien mit Jets (149–152)
Gestörte Galaxien mit innerer Absorption (153–160)
Galaxien mit diffusen Filamenten (161–166)
Galaxien mit diffusen Gegenarmen (167–172)
- Arp 168 (Messier 32)
Galaxien mit schmalen Gegenarmen (173–178)
Galaxien mit schmalen Filamenten (179–193)
- Arp 182 (NGC 7674 und NGC 7674A)
Galaxien mit vom Kern ausgeschleuderter Materie (194–208)
Galaxien mit Unregelmäßigkeiten, Absorption und Auflösung (209–214)
- (c) ESA/Hubble, CC BY 4.0
Galaxien mit angrenzenden Schleifen (215–220)
Galaxien mit amorphen Spiralarmen (221–226)
Galaxien mit konzentrischen Ringen (227–232)
- Arp 227 (NGC 474)
Galaxien mit Anzeichen für Aufspaltung (233–256)
- (c) ESA/Webb, NASA & CSA, L. Armus & A. Evans Acknowledgement: R. Colombari, CC BY 4.0
- Arp 240 (NGC 5257 und NGC 5258)
- (c) ESA/Hubble, CC BY 4.0
- Arp 247 (IC 2338 und IC 2339)
- (c) ESA/Hubble, CC BY 4.0
Galaxien mit unregelmäßigen Klumpen (257–268)
- (c) ESA/Hubble, CC BY 4.0
- Arp 268 (Holmberg II)
Doppelgalaxien mit verbundenen Armen (269–274)
- Arp 270 (NGC 3395 und NGC 3396)
Wechselwirkende Doppelgalaxien (275–280)
Doppelgalaxien mit Einströmung und Anziehung (281–286)
- Arp 281 (NGC 4627)
Galaxien mit Windeffekten (287–292)
Galaxien mit langen Filamenten (294–297)
Unklassifizierte Objekte (298–310)
- (c) Credit: ESA/Hubble & NASA, A. Evans, R. Chandar, CC BY 4.0Arp 298 (NGC 7469 und IC 5283)
- Arp 310 (IC 1259)
Gruppen von Galaxien (311–321)
- (c) ESA/Hubble, CC BY 4.0
Ketten von Galaxien (322–332)
Verschiedene (333–338)
Siehe auch
Literatur
- H. Arp: Atlas of Peculiar Galaxies. In: Astrophysical Journal. Supplement Series 14, 1966, S. 1. (Zusammenfassende Veröffentlichung)
- H. Arp: Atlas of Peculiar Galaxies. California Institute of Technology, Pasadena 1966, OCLC 225135206. (Eigentlicher Atlas)
Weblinks
- Der Katalog bei VizieR
- Online-Version des Atlas of Peculiar Galaxies
- Amateurbeobachtungen der Arp Galaxien ( vom 17. Oktober 2015 im Internet Archive)
Einzelnachweise
Auf dieser Seite verwendete Medien
Autor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
NGC 5544
Picture Details:
Optics 32-inch Schulman Telescope (RC Optical Systems) Camera SBIG STX CCD Camera Filters AstroDon Generation II Dates April 5th 2011 Location Mount Lemmon SkyCenter Exposure LRGB = 170:40:40:40 minutes Acquisition ACP Observatory Control Software (DC-3 Dreams),TheSky (Software Bisque), Maxim DL/CCD (Cyanogen) Processing CCDStack (CCDWare), Photoshop CS3 (Adobe)Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Fabian RRRR, Lizenz: CC BY-SA 3.0
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
Autor/Urheber: ESO, Lizenz: CC BY 4.0
This image was taken with the EFOSC instrument, attached to the 3.58-metre New Technology Telescope at ESO's La Silla Observatory in Chile. The data was acquired through three different filters (B, V, and R) for a total exposure time of 4440 seconds. The field of view is about 4 arcminutes.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/NGC 520 is the product of a collision between two disk galaxies that started 300 million years ago. It exemplifies the middle stages of the merging process: the disks of the parent galaxies have merged together, but the nuclei have not yet coalesced. It features an odd-looking tail of stars and a prominent dust lane that runs diagonally across the center of the image and obscures the galaxy. NGC 520 is one of the brightest galaxy pairs on the sky, and can be observed with a small telescope toward the constellation of Pisces, the Fish, having the appearance of a comet. It is about 100 million light-years away and about 100,000 light-years across. The galaxy pair is included in Arp's catalog of peculiar galaxies as Arp 157.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
About the object | |
---|---|
Object name | NGC 520, Arp 157, VV 231, KPG 031 |
Object description | Interacting Galaxies |
Position (J2000) | 01 24 35.42 +03 47 55.0 |
Constellation | Pisces |
Distance | 100 million light-years (50 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposal 9735: B. Whitmore (STScI) |
Instrument | ACS/WFC |
Exposure date(s) | October 22, 2004 |
Exposure time | 77 minutes |
Filters | F435W (B), F555W (V), and F814W (I) |
Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
Sometimes life is just unbearably sad... and I can't do much but look at galaxies.
Data from the following proposal is used to create this image: Establishing HST's Low Redshift Archive of Interacting Systems
All channels: ACS/WFC F606W
North is 56.11° counter-clockwise from up.Autor/Urheber: Own work, Lizenz: CC BY-SA 3.0
The galaxies NGC 5279 (left) anf NGC 5278 (right). Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 8' × 8' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: ESO, Lizenz: CC BY 4.0
Spiral galaxy NGC 1097
It is an almost-true colour composite based on images made with the multi-mode VIMOS instrument on the 8.2-m Melipal (Unit Telescope 3) of ESO's Very Large Telescope. Exposures were taken in three different wavebands which were associated to a given colour : R-band (centred around 652 nm; red), V (540 nm; green) and B (456 nm; blue). The images were taken on the night of December 9 to 10, 2004 in the presence of the President of the Republic of Chile, M. Ricardo Lagos. The observing conditions were very good (seeing well below 1 arcsec). The total exposure was 2.25 min in R, 3 min in V and 6 min in B. The scale is 0.205 arcsec/pix and the image covers a 7.7 x 6.6 arcmin2 region on the sky. All exposures were taken and pre-processed by ESO Paranal Science Operation astronomers. Additional image processing by Henri Boffin (ESO).
Credit: ESO
Coordinates Position (RA): 2 46 19.04 Position (Dec): -30° 16' 29.62" Field of view: 6.85 x 7.74 arcminutes Orientation: North is 0.1° left of vertical
Colours & filters Band Wavelength Telescope Optical B 456 nm Very Large Telescope VIMOS Optical V 540 nm Very Large Telescope VIMOS Optical R 652 nm Very Large Telescope VIMOS.
Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
I'm sure there are two galaxies doing something here, I'm just not entirely sure what went on in the past billion or so years to get a big, fluffy line of stars, gas, and dust all stretched out like that.
A color view is available at the Legacy Survey Viewer: legacysurvey.org/viewer?ra=200.7467&dec=84.5050&z... (Beware the big green artifacts)
Establishing HST's Low Redshift Archive of Interacting Systems
All Channels: ACS/WFC F606W
North is 8.88° counter-clockwise from up.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Fabian RRRR, Lizenz: CC BY-SA 3.0
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
Autor/Urheber: Own work, Lizenz: CC BY-SA 3.0
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 6' × 6' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
Picture Details:
Optics 32-inch Schulman Telescope (RC Optical Systems), Acquired remotely Camera SBIG STX 16803 CCD Camera Filters AstroDon Gen II Dates January 2012 Location Mount Lemmon SkyCenter Exposure LRGB = 260:70:70:70 minutes Acquisition ACP Observatory Control Software (DC-3 Dreams),TheSky (Software Bisque), Maxim DL/CCD (Cyanogen) Processing CCDStack (CCDWare), Photoshop CS5 (Adobe), PixInsightCredit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
NGC 3561 (Arp 105) within galaxy cluster Abell 1185
Picture Details:
Optics Schulman 0.8m Telescope (RCOS) Camera SBIG STX 16803 Filters AstroDon Generation II Dates Spring 2018 Location Mount Lemmon SkyCenter Exposure LRGB = 11 : 5 : 5 : 5 Hours Acquisition Astronomy Control Panel (DC3 Dreams), Maxim DL (Cyanogen), FlatMan XL (Alnitak) Processing PixInsight Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona.
The Advanced Camera for Surveys (ACS), the newest camera on NASA/ESA Hubble Space Telescope, has captured a spectacular pair of galaxies engaged in a celestial dance of cat and mouse or, in this case, mouse and mouse.
Located 300 million light-years away in the constellation Coma Berenices, the colliding galaxies have been nicknamed "The Mice" because of the long tails of stars and gas emanating from each galaxy. Otherwise known as NGC 4676, the pair will eventually merge into a single giant galaxy.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
Croped: Copeland's Septet
Picture Details:
Optics 32-inch Schulman Telescope (RC Optical Systems) Camera SBIG STX CCD Camera Filters AstroDon Generation II Dates March 26th and 27th 2011 Location Mount Lemmon SkyCenter Exposure LRGB = 180:50:50:50 minutes Acquisition ACP Observatory Control Software (DC-3 Dreams),TheSky (Software Bisque), Maxim DL/CCD (Cyanogen) Processing CCDStack (CCDWare), Photoshop CS3 (Adobe) Guest Astronomers: Tom Bash, John Fox, and Craig GatesCredit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 10' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 18' × 18' (0.54" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
Picture Details:
Optics 32-inch Schulman Telescope (RC Optical Systems) Camera SBIG STX CCD Camera Filters AstroDon Generation II Dates March 26th and 27th 2011 Location Mount Lemmon SkyCenter Exposure LRGB = 140:50:50:50 minutes Acquisition ACP Observatory Control Software (DC-3 Dreams),TheSky (Software Bisque), Maxim DL/CCD (Cyanogen) Processing CCDStack (CCDWare), Photoshop CS3 (Adobe) Guest Astronomers: Tom Bash, John Fox, and Craig GatesCredit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona
Autor/Urheber: NASA, ESA, S. Beckwith (STScI), and The Hubble Heritage Team STScI/AURA), Lizenz: CC BY 3.0
The Whirlpool Galaxy (Spiral Galaxy M51, NGC 5194) is a classic spiral galaxy located in the Canes Venatici constellation.
Out of this whirl: The Whirlpool Galaxy (M51) and companion galaxy
The graceful, winding arms of the majestic spiral galaxy M51 (NGC 5194) appear like a grand spiral staircase sweeping through space. They are actually long lanes of stars and gas laced with dust.
This sharpest-ever image, taken in January 2005 with the Advanced Camera for Surveys aboard the NASA/ESA Hubble Space Telescope, illustrates a spiral galaxy's grand design, from its curving spiral arms, where young stars reside, to its yellowish central core, a home of older stars. The galaxy is nicknamed the Whirlpool because of its swirling structure.
The Whirlpool's most striking feature is its two curving arms, a hallmark of so-called grand-design spiral galaxies. Many spiral galaxies possess numerous, loosely shaped arms that make their spiral structure less pronounced. These arms serve an important purpose in spiral galaxies. They are star-formation factories, compressing hydrogen gas and creating clusters of new stars. In the Whirlpool, the assembly line begins with the dark clouds of gas on the inner edge, then moves to bright pink star-forming regions, and ends with the brilliant blue star clusters along the outer edge.
Some astronomers believe that the Whirlpool's arms are so prominent because of the effects of a close encounter with NGC 5195, the small, yellowish galaxy at the outermost tip of one of the Whirlpool's arms. At first glance, the compact galaxy appears to be tugging on the arm. Hubble's clear view, however, shows that NGC 5195 is passing behind the Whirlpool. The small galaxy has been gliding past the Whirlpool for hundreds of millions of years.
As NGC 5195 drifts by, its gravitational muscle pumps up waves within the Whirlpool's pancake-shaped disk. The waves are like ripples in a pond generated when a rock is thrown in the water. When the waves pass through orbiting gas clouds within the disk, they squeeze the gaseous material along each arm's inner edge. The dark dusty material looks like gathering storm clouds. These dense clouds collapse, creating a wake of star birth, as seen in the bright pink star-forming regions. The largest stars eventually sweep away the dusty cocoons with a torrent of radiation, hurricane-like stellar winds, and shock waves from supernova blasts. Bright blue star clusters emerge from the mayhem, illuminating the Whirlpool's arms like city streetlights.
The Whirlpool is one of astronomy's galactic darlings. Located 31 million light-years away in the constellation Canes Venatici (the Hunting Dogs), the Whirlpool's beautiful face-on view and closeness to Earth allow astronomers to study a classic spiral galaxy's structure and star-forming processes.
Credit:
NASA, ESA, S. Beckwith (STScI), and The Hubble Heritage Team STScI/AURA)
About the Image
NASA caption Id: heic0506a Type: Observation Release date: 25 April 2005, 06:00 Related releases: heic0506 Size: 11477 x 7965 px
About the Object
Name: Messier 51, Whirlpool Galaxy Type: • Local Universe : Galaxy : Type : Spiral • Galaxies Images/Videos Distance: 25 million light years
Colours & filters
Band Wavelength Telescope Optical B 435 nm Hubble Space Telescope ACS Optical V 555 nm Hubble Space Telescope ACS Optical H-alpha + Nii 658 nm Hubble Space Telescope ACS Infrared I 814 nm Hubble Space Telescope ACS.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
A delightful and unusual merger of galaxies, resulting in the comet-like appearance of one galaxy. Only a small amount of dust is visible, but many small dots which I presume are globular clusters are sprinkled within the pair. Edit: Upon looking at the color data, the clusters may be younger clusters, not necessarily globulars. It's bluer than I expected, which would indicate that star formation has been going on.
A color and widefield view is available in SDSS data at the Legacy Survey viewer: legacysurvey.org/viewer?ra=73.3523&dec=-4.7932&zo...
Data from the following proposal is used to create this image: Establishing HST's Low Redshift Archive of Interacting Systems
All channels: ACS/WFC F606W
North is 12.84° clockwise from up.NGC 541 Fuels an Irregular Galaxy in New Hubble Image
Center, right: Bright, white elliptical galaxy with very bright core from which a diffuse glow extends outward. Another bright, smaller/more distant galaxy is below it, while bright blue/white irregular is to its lower left.
This striking pair is an elliptical galaxy NGC 541 and an unusual star-forming, irregular dwarf galaxy known as Minkowski’s Object (the bluish object to the lower left of NGC 541). Elliptical galaxies are nearly spherical to egg-shaped groups of stars that form when galaxies merge. NGC 541 shoots out radio jets that are invisible to human eyes but detectable by radio telescopes. These jets originate in the accretion disk around the galaxy’s central black hole.
The radio jet from NGC 541 likely caused the star-formation in Minkowski’s Object. Radio galaxies like NGC 541 are surrounded by gaseous halos and/or debris from recent merger events – which may have triggered the radio galaxy activity in the first place. The jet plows into the moderately dense, warm gas around the galaxy and the shock compresses and heats the gas, causing it to become energized, or ionized. As the ionized gas reverts from its higher-energy state to a lower-energy state, energy leaves the cloud in the form of radiation. As the clouds cool, they collapse, giving rise to starbirth. Minkowski’s Object is about 7.5 million years old and consists of about 20 million stars.
Hubble observed Minkowski’s Object and NGC 541 to get a better sense of how star formation occurs in this region, what kind of star formation takes place, and the properties of the jet that triggers it.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Fabian RRRR, Lizenz: CC BY-SA 3.0
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Galactic Wreckage in Stephan's Quintet
A clash among members of a famous galaxy quintet reveals an assortment of stars across a wide color range, from young, blue stars to aging, red stars.
This portrait of Stephan's Quintet, also known as Hickson Compact Group 92, was taken by the new Wide Field Camera 3 (WFC3) aboard NASA's Hubble Space Telescope. Stephan's Quintet, as the name implies, is a group of five galaxies. The name, however, is a bit of a misnomer. Studies have shown that group member NGC 7320, at upper left, is actually a foreground galaxy about seven times closer to Earth than the rest of the group.
Three of the galaxies have distorted shapes, elongated spiral arms, and long, gaseous tidal tails containing myriad star clusters, proof of their close encounters. These interactions have sparked a frenzy of star birth in the central pair of galaxies. This drama is being played out against a rich backdrop of faraway galaxies.
The image, taken in visible and near-infrared light, showcases WFC3's broad wavelength range.
The colors trace the ages of the stellar populations, showing that star birth occurred at different epochs, stretching over hundreds of millions of years. The camera's infrared vision also peers through curtains of dust to see groupings of stars that cannot be seen in visible light.
NGC 7319, at top right, is a barred spiral with distinct spiral arms that follow nearly 180 degrees back to the bar. The blue specks in the spiral arm at the top of NGC 7319 and the red dots just above and to the right of the core are clusters of many thousands of stars. Most of the quintet is too far away even for Hubble to resolve individual stars.
Continuing clockwise, the next galaxy appears to have two cores, but it is actually two galaxies, NGC 7318A and NGC 7318B. Encircling the galaxies are young, bright blue star clusters and pinkish clouds of glowing hydrogen where infant stars are being born. These stars are less than 10 million years old and have not yet blown away their natal cloud. Far away from the galaxies, at right, is a patch of intergalactic space where many star clusters are forming.
NGC 7317, at bottom left, is a normal-looking elliptical galaxy that is less affected by the interactions.
Sharply contrasting with these galaxies is the dwarf galaxy NGC 7320 at upper left. Bursts of star formation are occurring in the galaxy's disk, as seen by the blue and pink dots. In this galaxy, Hubble can resolve individual stars, evidence that NGC 7320 is closer to Earth.
NGC 7320 is 40 million light-years from Earth. The other members of the quintet reside 290 million light-years away in the constellation Pegasus.
These farther members are markedly redder than the foreground galaxy, suggesting that older stars reside in their cores. The stars' light also may be further reddened by dust stirred up in the encounters.
Spied by Edouard M. Stephan in 1877, Stephan's Quintet is the first compact group ever discovered.
WFC3 observed the quintet in July and August 2009. The composite image was made by using filters that isolate light from the blue, green, and infrared portions of the spectrum, as well as emission from ionized hydrogen.
These Hubble observations are part of the Hubble Servicing Mission 4 Early Release Observations. NASA astronauts installed the WFC3 camera during a servicing mission in May to upgrade and repair the 19-year-old Hubble telescope.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 8' × 8' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/IC51 is kind of a confusing galaxy. It's got elliptical shells but it's also got dust and and a relatively large central disk, keeping it from fitting neatly into any category. It's simply listed as "interacting galaxies" in SIMBAD but it's progressed so far that it appears as a single galaxy to me.
Red: hst_06276_06_wfpc2_f814w_wf_sci Green: hst_06276_06_wfpc2_f555w_wf_sci
Blue: hst_06276_06_wfpc2_f675w_wf_sciAutor/Urheber: Fabian RRRR, Lizenz: CC BY-SA 3.0
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
(c) ESA/Hubble, CC BY 4.0
One Amongst Millions
Looking deep into the Universe, the NASA/ESA Hubble Space Telescope catches a passing glimpse of the numerous arm-like structures that sweep around this barred spiral galaxy, known as NGC 2608. Appearing as a slightly stretched, smaller version of our Milky Way, the peppered blue and red spiral arms are anchored together by the prominent horizontal central bar of the galaxy.
In Hubble photos, bright Milky Way stars will sometimes appear as pinpoints of light with prominent lens flares. A star with these features is seen in the lower right corner of the image, and another can be spotted just above the pale centre of the galaxy. The majority of the fainter points around NGC 2608, however, lack these features, and upon closer inspection they are revealed to be thousands of distant galaxies. NGC 2608 is just one among an uncountable number of kindred structures.
Similar expanses of galaxies can be observed in other Hubble images such as the Hubble Deep Field which recorded over 3000 galaxies in one field of view.
Credit:
ESA/Hubble & NASA, A. Riess et al.
Coordinates Position (RA): 8 35 17.23 Position (Dec): 28° 28' 27.42" Field of view: 2.24 x 2.00 arcminutes Orientation: North is 12.6° left of vertical
Colours & filters Band Wavelength Telescope Optical V 555 nm Hubble Space Telescope WFC3 Optical I 814 nm Hubble Space Telescope WFC3 Infrared H 1.6 μm Hubble Space Telescope WFC3Optical Long Pass 350 nm Hubble Space Telescope WFC3.
Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
Things have been rough for this galaxy. There are stellar streams strewn all about, the dust disk is warped all over the place, and there's hardly any star formation going on. That's what makes it so cool, though. I love the way the dust disk is pushed and pulled around, but still maintains semblance to a disk.
BONUS: If you look down at the bottom, next to the two red stars, there's the cutest little hourglass nebula I've ever seen. I think it's a planetary nebula, anyway. It's either a planetary nebula that's fairly typical, or the weirdest galaxy I've ever seen. I'll defer to Occam's razor for this one.
Edit: Some Galaxy Zoo people and Phil Plait are shooting holes in my idea that it's anything but a galaxy. Apparently there ARE galaxies that look exactly like this, such as NGC 2665. I'm just gonna redact that whole paragraph for now.
Color from SDSS again. Data for that may be found here: dr12.sdss.org/fields/name?name=arp156
NASA/ESA/SDSS/Judy Schmidt
Establishing HST's Low Redshift Archive of Interacting Systems
Luminosity: ACS/WFC F606W Red: SDSS i Green: SDSS r Blue: SDSS g
North is 37.73° clockwise from up.en:HCG 31 group of galaxies. (en:NGC 1741)
en:Hubble Space Telescope; 1.42′ x 1′ view
Credit: en:NASA/en:STScI/en:WikiSky
The image created using en:WikiSky's snapshot tool out of HST data.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Hubble Captures a Peculiar Pair
Two, face-on spiral galaxies. The larger one is centered in the image. The smaller one is superimposed on the upper left side of the larger.
This new NASA Hubble Space Telescope image of IC 4271, also known as Arp 40, is a curious pair of spiral galaxies some 800 million light-years away. The smaller galaxy is superimposed on the larger one, which is a type of active galaxy called a Seyfert galaxy.
Seyfert galaxies are named for astronomer Carl K. Seyfert who, in 1943, published a paper about spiral galaxies with very bright emission lines. Today we know that about 10% of all galaxies may be Seyfert galaxies. They belong to the class of “active galaxies” – galaxies that have supermassive black holes at their centers accreting material, which releases vast amounts of radiation. The active cores of Seyfert galaxies are at their brightest when observed in light outside the visible spectrum. The larger galaxy in this pair is a Type II Seyfert galaxy, which means it is a very bright source of infrared and visible light.
The image uses data collected during Hubble observations designed to study the role of dust in shaping the energy distributions of low mass disk galaxies. The Hubble observations looked at six pairs of galaxies where one was in front of the other. The broad range of light that Hubble’s Wide Field Camera 3 is sensitive to, along with its resolution, allowed the researchers to map the foreground galaxy’s dust disk in fine detail across ultra-violet, visible, and infrared light. Because IC 4271 is a Type II Seyfert Galaxy, visible and infrared wavelengths of light dominate the image. The colors in this image are primarily visible light, while the color violet represents ultraviolet light and red represents near infrared light.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/(c) Credit: ESA/Hubble & NASA, A. Evans, R. Chandar, CC BY 4.0
Hubble Captures a Peculiar Galactic Pair
This striking image from the NASA/ESA Hubble Space Telescope showcases Arp 298, a stunning pair of interacting galaxies. Arp 298 — which comprises the two galaxies NGC 7469 and IC 5283 — lies roughly 200 million light-years from Earth in the constellation Pegasus. The larger of the two galaxies pictured here is the barred spiral galaxy NGC 7469, and IC 5283 is its diminutive companion. NGC 7469 is also host to an active, supermassive black hole and a bright ring of star clusters.
The “Arp” in this galaxy pair’s name signifies that they are listed in the Atlas of Peculiar Galaxies compiled by the astronomer Halton Arp. The Atlas of Peculiar Galaxies is a rogues’ gallery of weird and wonderful galaxies containing peculiar structures, featuring galaxies exhibiting everything from segmented spiral arms to concentric rings. This interacting galaxy pair is a familiar sight for Hubble — a portrait of the merging galaxies in Arp 298 was published in 2008.
This image of Arp 298 contains data from three separate Hubble proposals. By combining observations from three proposals, Arp 298 is captured in glorious detail in seven different filters from two of Hubble’s instruments — the Wide Field Camera 3 and the Advanced Camera for Surveys.
The process of planning Hubble observations starts with a proposal — a detailed plan of what an astronomer intends to observe and their scientific motivation for doing so. Once a year, these proposals are gathered and judged in a gruelling review process which assess their scientific merit and feasibility. Fewer than 20% of the proposed observations in any given year will make it through this process and be approved, which makes observing time with Hubble highly prized indeed.
This system will be one of the first galaxies observed with the NASA/ESA/CSA James Webb Space Telescope as part of the Director's Discretionary Early Release Science Programs in Summer 2022.
Credit:
ESA/Hubble & NASA, A. Evans, R. Chandar
Coordinates Position (RA): 23 3 16.34 Position (Dec): 8° 53' 0.05" Field of view: 3.16 x 2.56 arcminutes Orientation: North is 74.4° right of vertical
Colours & filters Band Wavelength Telescope Ultraviolet UV 275 nm Hubble Space Telescope WFC3 Optical U 336 nm Hubble Space Telescope WFC3 Optical B 435 nm Hubble Space Telescope ACS Optical I 814 nm Hubble Space Telescope ACS Infrared Paschen Beta continuum 1.3 μm Hubble Space Telescope WFC3 Infrared H 1.6 μm Hubble Space Telescope WFC3 Optical H-alpha + NII 665 nm Hubble Space Telescope WFC3.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/The galaxy system NGC 1614 has a bright optical center and two clear inner spiral arms that are fairly symmetrical. It also has a spectacular outer structure that consists principally of a large one-sided curved extension of one of these arms to the lower right, and a long, almost straight tail that emerges from the nucleus and crosses the extended arm to the upper right. The galaxy appears to be the result of a tidal interaction and the resulting merger of two predecessor systems. The system has a nuclear region of quasar-like luminosity, but shows no direct evidence for an active nucleus. It is heavily and unevenly reddened across its nucleus, while infrared imaging also shows a ridge of dust. The linear tail to the upper right and extended arms to the lower right are likely the remains of an interacting companion and the tidal plume(s) caused by the collision. NGC 1614 is located about 200 million light-years away from Earth in the constellation of Eridanus, the River.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
About the object | |
---|---|
Object name | NGC 1614, Arp 186, Mrk 0617, II Zw 015 |
Object description | Interacting Galaxies |
Position (J2000) | 04 33 59.99 +08 34 42.8 |
Constellation | Eridanus |
Distance | 200 million light-years (50 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposal 10592: A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University) |
Instrument | ACS/WFC |
Exposure date(s) | August 13, 2002 |
Exposure time | 33 minutes |
Filters | F435W (B) and F814W (I) |
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Own work, Lizenz: CC BY-SA 3.0
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
(c) ESA/Webb, NASA & CSA, L. Armus & A. Evans Acknowledgement: R. Colombari, CC BY 4.0
This image from the NASA/ESA/CSA James Webb Space Telescope depicts IC 1623, an entwined pair of interacting galaxies which lies around 270 million light-years from Earth in the constellation Cetus. The two galaxies in IC 1623 are plunging headlong into one another in a process known as a galaxy merger. Their collision has ignited a frenzied spate of star formation known as a starburst, creating new stars at a rate more than twenty times that of the Milky Way galaxy.This interacting galaxy system is particularly bright at infrared wavelengths, making it a perfect proving ground for Webb’s ability to study luminous galaxies. A team of astronomers captured IC 1623 across the infrared portions of the electromagnetic spectrum using a trio of Webb’s cutting-edge scientific instruments: MIRI, NIRSpec, and NIRCam. In so doing, they provided an abundance of data that will allow the astronomical community at large to fully explore how Webb’s unprecedented capabilities will help to unravel the complex interactions in galactic ecosystems. These observations are also accompanied by data from other observatories, including the NASA/ESA Hubble Space Telescope, and will help set the stage for future observations of galactic systems with Webb.The merger of these two galaxies has long been of interest to astronomers, and has previously been imaged by Hubble and by other space telescopes. The ongoing, extreme starburst causes intense infrared emission, and the merging galaxies may well be in the process of forming a supermassive black hole. A thick band of dust has blocked these valuable insights from the view of telescopes like Hubble. However, Webb’s infrared sensitivity and its impressive resolution at those wavelengths allows it to see past the dust and has resulted in the spectacular image above, a combination of MIRI and NIRCam imagery.The luminous core of the galaxy merger turns out to be both very bright and highly compact, so much so that Webb’s diffraction spikes appear atop the galaxy in this image. The 8-pronged, snowflake-like diffraction spikes are created by the interaction of starlight with the physical structure of the telescope. The spiky quality of Webb’s observations is particularly noticeable in images containing bright stars, such as Webb’s first deep field image.
MIRI was contributed by ESA and NASA, with the instrument designed and built by a consortium of nationally funded European Institutes (The MIRI European Consortium) in partnership with JPL and the University of Arizona.NIRSpec was built for the European Space Agency (ESA) by a consortium of European companies led by Airbus Defence and Space (ADS) with NASA’s Goddard Space Flight Center providing its detector and micro-shutter subsystems.Results based on this observation of IC 1623 have been published in the Astrophysical Journal.[Image description: The two galaxies swirl into a single chaotic object in the centre. Long, blue spiral arms stretch vertically, faint at the edges. Hot gas spreads horizontally over that, mainly bright red with many small gold spots of star formation. The core of the merging galaxies is very bright and radiates eight large, golden diffraction spikes. The background is black, with many tiny galaxies in orange and blue.]
Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
Interesting merger that seems to be an in progress shot showing some shells forming in a large elliptical galaxy.
Data from the following proposal is used to create this image: Establishing HST's Low Redshift Archive of Interacting Systems
All channels: ACS/WFC F606W
North is 8.60° clockwise from up.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/UGC 4881, known as the "The Grasshopper," is a stunning system consisting of two colliding galaxies. It has a bright curly tail containing a remarkable number of star clusters. The galaxies are thought to be halfway through a merger the cores of the parent galaxies are still clearly separated, but their disks are overlapping. A supernova exploded in this system in 1999 and astronomers believe that a vigorous burst of star formation may have just started. This notable object is located in the constellation of Lynx, some 500 million light-years away from Earth. UGC 4881 is the 55th galaxy in Arp's Atlas of Peculiar Galaxies.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
About the object | |
---|---|
Object name | UGC 4881, VV 155, Arp 055, "The Grasshopper" |
Object description | Interacting Galaxies |
Position (J2000) | 09 15 55.38 +44 19 55.3 |
Constellation | Lynx |
Distance | 500 million light-years (150 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposal 10592: A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University) |
Instrument | ACS/WFC |
Exposure date(s) | December 4, 2001 |
Exposure time | 35 minutes |
Filters | F435W (B) and F814W (I) |
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 10' × 10' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
Data from the following proposal is used to create this image: Establishing HST's Low Redshift Archive of Interacting Systems
All channels: ACS/WFC F606W
North is 62.74° clockwise from up.This Hubble Space Telescope image shows a group of interacting galaxies called Arp 273. The larger of the spiral galaxies, known as UGC 1810, has a disk that is tidally distorted into a rose-like shape by the gravitational tidal pull of the companion galaxy below it, known as UGC 1813. A swath of blue jewels across the top is the combined light from clusters of intensely bright and hot young blue stars. These massive stars glow fiercely in ultraviolet light.
The smaller, nearly edge-on companion shows distinct signs of intense star formation at its nucleus, perhaps triggered by the encounter with the companion galaxy.
A series of uncommon spiral patterns in the large galaxy is a tell-tale sign of interaction. The large, outer arm appears partially as a ring, a feature seen when interacting galaxies actually pass through one another. This suggests that the smaller companion actually dived deep, but off-center, through UGC 1810. The inner set of spiral arms is highly warped out of the plane with one of the arms going behind the bulge and coming back out the other side. How these two spiral patterns connect is still not precisely known.
A possible mini-spiral may be visible in the spiral arms of UGC 1810 to the upper right. It is noticeable how the outermost spiral arm changes character as it passes this third galaxy, from smooth with lots of old stars (reddish in color) on one side to clumpy and extremely blue on the other. The fairly regular spacing of the blue star-forming knots fits with what is seen in the spiral arms of other galaxies and is predictable based on instabilities in the gas contained within the arm.
The larger galaxy in the UGC 1810 - UGC 1813 pair has a mass that is about five times that of the smaller galaxy. In unequal pairs such as this, the relatively rapid passage of a companion galaxy produces the lopsided or asymmetric structure in the main spiral. Also in such encounters, the starburst activity typically begins in the minor galaxies earlier than in the major galaxies. These effects could be due to the fact that the smaller galaxies have consumed less of the gas present in their nucleus, from which new stars are born.
Arp 273 lies in the constellation Andromeda and is roughly 300 million light-years away from Earth. The image shows a tenuous tidal bridge of material between the two galaxies that are separated by tens of thousands of light-years from each other.
The interaction was imaged on December 17, 2010, with Hubble's Wide Field Camera 3 (WFC3).
This Hubble image is a composite of data taken with three separate filters on WFC3 that allow a broad range of wavelengths covering the ultraviolet, blue, and red portions of the spectrum.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0
The sky image is obtained by Sloan Digital Sky Survey, DR14 with SciServer.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
Very pretty pair of interacting spiral galaxies.
There's a color view available from the ground-based Legacy Survey here: legacysurvey.org/viewer?ra=122.8032&dec=25.2003&z...
Data from the following proposal is used to create this image: Establishing HST's Low Redshift Archive of Interacting Systems
All channels: ACS/WFC F606W
North is 13.19° clockwise from up.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
Wild's Triplet of Interacting Galaxies
Picture Details:
Optics 24-inch RC Optical Systems Telescope Camera SBIG STL11000 CCD Camera Filters Custom Scientific Dates February 1st 2009 Location Mount Lemmon SkyCenter Exposure LRGB = 150:30:30:40 minutes Acquisition ACP Observatory Control Software (DC-3 Dreams),TheSky (Software Bisque), Maxim DL/CCD (Cyanogen) Processing CCDStack (CCDWare), Mira (MiraMetrics), Maxim DL (Cyanogen), Photoshop CS3 (Adobe)Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/NGC 6621/2 (VV 247, Arp 81) is a strongly interacting pair of galaxies, seen about 100 million years after their closest approach. It consists of NGC 6621 (to the right) and NGC 6622 (to the left). NGC 6621 is the larger of the two, and is a very disturbed spiral galaxy. The encounter has pulled a long tail out of NGC 6621 that has now wrapped behind its body. The collision has also triggered extensive star formation between the two galaxies. Scientists believe that Arp 81 has a richer collection of young massive star clusters than the notable Antennae galaxies (which are much closer than Arp 81). The pair is located in the constellation of Draco, approximately 300 million light-years away from Earth. Arp 81 is the 81st galaxy in Arp's Atlas of Peculiar Galaxies.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
About the object | |
---|---|
Object name | NGC 6621, NGC 6622, VV 247, Arp 81, VII Zw 778, KPG 534A |
Object description | Interacting Galaxies |
Position (J2000) | 18 12 54.70 +68 21 49.0 |
Constellation | Draco |
Distance | 300 million light-years (100 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposal 7467: W. Keel (University of Alabama, Tuscaloosa) |
Instrument | WFPC2 |
Exposure date(s) | March 15, 1999 |
Exposure time | 1.4 hours |
Filters | F435W (B) and F814W (I) |
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/NGC 1241 (upper left NGC 1242)
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 6' × 8' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
A four-way interaction going on with a dusty spiral disk onlooker apparently far enough away from the activity not to be disturbed much by it.
This group sits just south of the magnificent NGC 3718, and has by proximity also been imaged by a lot of astrophotographers.
A Legacy Survey view is here: legacysurvey.org/viewer?ra=173.1635&dec=52.9433&z...
Data from the following proposal is used to create this image: Establishing HST's Low Redshift Archive of Interacting Systems
All channels: ACS/WFC F606W
North is 37.93° clockwise from up.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/UGC 8335 is a strongly interacting pair of spiral galaxies resembling two ice skaters. The interaction has united the galaxies via a bridge of material and has yanked two strongly curved tails of gas and stars from the outer parts of their bodies . Both galaxies show dust lanes in their centers. UGC 8335 is located in the constellation of Ursa Major, the Great Bear, about 400 million light-years from Earth. It is the 238th galaxy in Arp's Atlas of Peculiar Galaxies.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
About the object | |
---|---|
Object name | UGC 8335, VV 250a, Arp 238, KPG 369B |
Object description | Interacting Galaxies |
Position (J2000) | 13 15 34.50 +62 07 33.9 |
Constellation | Ursa Major |
Distance | 400 million light-years (150 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposal 10592: A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University) |
Instrument | ACS/WFC |
Exposure date(s) | May 10, 2002 |
Exposure time | 36 minutes |
Filters | F435W (B) and F814W (I) |
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Judy Schmidt, Lizenz: CC BY 2.0
Hubble turned 32 yesterday. This was the target chosen to celebrate that event. Tight groupings such as this are a relatively rare sight, and this one is so compact that there are multiple overlapping galaxies along our line of sight.
Anyway, just thought I'd share my version of it. I wanted to show it with a lighter background and a more gentle touch on the color saturation levels. There's an H-alpha filter available. I chose not to use it.
You can see the official version over yonder.
Red: WFC3/UVIS F814W Green: WFC3/UVIS F606W Blue: WFC3/UVIS F475W
North is NOT up. It is 41.6° counter-clockwise from up.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0
The sky image is obtained by Sloan Digital Sky Survey, DR14 with SciServer.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/UGC 9618, also known as VV 340 or Arp 302 consists of a pair of very gas-rich spiral galaxies in their early stages of interaction: VV 340A is seen edge-on to the left, and VV 340B face-on to the right. An enormous amount of infrared light is radiated by the gas from massive stars that are forming at a rate similar to the most vigorous giant star-forming regions in our own Milky Way. UGC 9618 is 450 million light-years away from Earth, and is the 302nd galaxy in Arp's Atlas of Peculiar Galaxies.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
About the object | |
---|---|
Object name | UGC 9618, VV 340, Arp 302, VV 340A, VV 340B, KPG 446B |
Object description | Interacting Galaxies |
Position (J2000) | 14 57 00.90 +24 37 01.7 |
Constellation | Bo tes |
Distance | 450 million light-years (150 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposal 10592: A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University) |
Instrument | ACS/WFC |
Exposure date(s) | January 6, 2002 |
Exposure time | 33 minutes |
Filters | F435W (B) and F814W (I) |
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0
The sky image is obtained by Sloan Digital Sky Survey, DR14 with SciServer.
Autor/Urheber: Fabian RRRR, Lizenz: CC BY-SA 3.0
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/(c) ESA/Hubble & NASA, J. Dalcanton; Acknowledgement: J. Schmidt, CC BY 4.0
A Dangerous Dance
This Picture of the Week features two interacting galaxies that are so intertwined, they have a collective name — Arp 91. This delicate galactic dance is taking place over 100 million light-years from Earth, and was captured by the NASA/ESA Hubble Space Telescope. The two galaxies comprising Arp 91 do have their own names: the lower galaxy, which in this image looks like a bright spot, is known as NGC 5953; and the ovoid galaxy to the upper right is NGC 5954. In reality, both of these galaxies are spiral galaxies, but their shapes appear very different because they are orientated differently with respect to Earth.
Arp 91 provides a particularly vivid example of galactic interaction. NGC 5954 is clearly being tugged towards NGC 5953 — it looks like it is extending one spiral arm downwards. It is the immense gravitational attraction of the two galaxies that is causing them to interact. Such gravitational interactions between galaxies are common, and are an important part of galactic evolution. Most astronomers nowadays believe that collisions between spiral galaxies lead to the formation of another type of galaxy, known as elliptical galaxies. These immensely energetic and massive collisions, however, happen on timescales that dwarf a human lifetime — they take place over hundreds of millions of years. So we should not expect Arp 91 to look any different over the course of our lifetimes!
Coordinates Position (RA): 15 34 33.16 Position (Dec): 15° 11' 46.26" Field of view: 2.55 x 2.85 arcminutes Orientation: North is 82.0° right of vertical Colours & filters Band Wavelength Telescope Optical G 477 nm SDSS Optical G 474 nm Víctor M. Blanco 4-meter Telescope DECam Optical R 644 nm Víctor M. Blanco 4-meter Telescope DECam Optical R 623 nm SDSS Optical I 785 nm Víctor M. Blanco 4-meter Telescope DECam Optical I 762 nm SDSS Optical V 606 nm Hubble Space Telescope ACS.
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/(c) ESA/Hubble, CC BY 4.0
This image features Arp 72, a very selective galaxy group that only includes two interacting galaxies: NGC 5996 (the large spiral galaxy) and NGC 5994 (its smaller companion, in the lower left of the image). Both galaxies lie approximately 160 million light-years from Earth, and their cores are separated from each other by a distance of around 67 thousand light-years. Moreover, the distance between the galaxies at their closest points is even smaller, closer to 40 thousand light-years. Whilst this might still sound vast, in galactic separation terms it is really very cosy! For comparison, the distance between the Milky Way and its nearest independent galactic neighbour Andromeda is around 2.5 million light-years. Alternatively, the distance between the Milky Way and its largest and brightest satellite galaxy, the Large Magellanic Cloud (satellite galaxies are galaxies that are bound in orbit around another galaxy), is about 162 thousand light-years. Given this, coupled with the fact that NGC 5996 is roughly comparable in size to the Milky Way, it is not surprising that NGC 5996 and NGC 5994 — apparently separated by only 40 thousand light-years or so — are interacting with one another. In fact, the interaction might be what has caused the spiral shape of NGC 5996 to distort and apparently be drawn in the direction of NGC 5994. It also prompted the formation of the very long and faint tail of stars and gas curving away from NGC 5996, up to the top right of the image. This ‘tidal tail’ is a common phenomenon that appears when galaxies get in close together, as can be seen in several Hubble images.[Image Description: A large spiral galaxy with a smaller neighbouring galaxy. The spiral galaxy is wide and distorted, with colourful dust. Its companion lies close by it at the end of a spiral arm, to the lower left. A long, faint tail of stars reaches up from the right side of the spiral galaxy to the top of the image. Several small, distant galaxies can be seen in the background, as well as one bright star in the foreground.]
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
A beautiful collision is underway.
A good color view is available from the DECaLS viewer: legacysurvey.org/viewer?ra=148.2908&dec=7.8657&zo...
Data from the following proposal is used to create this image: Establishing HST's Low Redshift Archive of Interacting Systems
All channels: ACS/WFC F606W
North is 23.75° counter-clockwise from up.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Own work, Lizenz: CC BY-SA 3.0
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/(c) Credit: NASA, ESA, STScI, and J. Dalcanton (Center for Computational Astrophysics/Flatiron Inst., UWashington), CC BY 4.0
Hubble’s Observation of Arp 143
A spectacular head-on collision between two galaxies has been captured by the NASA/ESA Hubble Space Telescope, which has the unusual triangular-shaped star-birthing frenzy.
The interacting galaxy duo is collectively called Arp 143. The pair contains the distorted, star-forming spiral galaxy NGC 2445, at right, along with its less flashy companion, NGC 2444, at left. This frenzied action takes place against the tapestry of distant galaxies. Some of them can be seen through the interacting pair.
Credit: NASA, ESA, STScI, and J. Dalcanton (Center for Computational Astrophysics/Flatiron Inst., UWashington)
Coordinates Position (RA): 7 46 54.65 Position (Dec): 39° 1' 23.81" Field of view: 3.30 x 2.20 arcminutes Orientation: North is 112.2° left of vertical
Colours & filters Band Wavelength Telescope Optical g 475 nm Hubble Space Telescope ACS Optical V 606 nm Hubble Space Telescope ACS Optical I 814 nm Hubble Space Telescope ACS Optical H-alpha + N II 665 nm Hubble Space Telescope WFC3.
The jet emerging from the galactic core of M87 (NGC 4486). The jet extends to about 20 arc seconds (absolute length ca. 5 kly).
Composite image of Hubble Telescope observations. The galaxy is too distant for the Hubble Telescope to resolve individual stars; the bright dots in the image are star clusters, assumed to contain some hundreds of thousands of stars each.
Original caption:
- "Black Hole-Powered Jet of Electrons and Sub-Atomic Particles Streams From Center of Galaxy M87"
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Die Autorenschaft wurde nicht in einer maschinell lesbaren Form angegeben. Es wird Fabian RRRR als Autor angenommen (basierend auf den Rechteinhaber-Angaben)., Lizenz: CC BY 2.5
Image of the Crab Nebula in Infrared at 3.6 (blue), 4.x (green) and 8.0 (red) µm. The image has been made by myself (Médéric Boquien) from the public image archive of the Spitzer Space Telescope (courtesy NASA/JPL-Caltech).
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: HST, Lizenz: CC BY-SA 3.0
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
UGC 10214 Tadpole Galaxy. This picture of the galaxy UGC 10214 was was taken by the Advanced Camera for Surveys (ACS), which was installed aboard the Hubble Space Telescope (HST) in March 2002 during HST Servicing Mission 3B (STS-109 mission). Dubbed the "Tadpole," this spiral galaxy is unlike the textbook images of stately galaxies. Its distorted shape was caused by a small interloper, a very blue, compact galaxy visible in the upper left corner of the more massive Tadpole. The Tadpole resides about 420 million light-years away in the constellation Draco. Seen shining through the Tadpole's disk, the tiny intruder is likely a hit-and-run galaxy that is now leaving the scene of the accident. Strong gravitational forces from the interaction created the long tail of debris, consisting of stars and gas that stretch our more than 280,000 light-years. The galactic carnage and torrent of star birth are playing out against a spectacular backdrop: a "wallpaper pattern" of 6,000 galaxies. These galaxies represent twice the number of those discovered in the legendary Hubble Deep Field, the orbiting observatory's "deepest" view of the heavens, taken in 1995 by the Wide Field and planetary camera 2. The ACS picture, however, was taken in one-twelfth of the time it took to observe the original HST Deep Field. In blue light, ACS sees even fainter objects than were seen in the "deep field." The galaxies in the ACS picture, like those in the deep field, stretch back to nearly the beginning of time.
Autor/Urheber: Ngc1535, Lizenz: CC BY-SA 4.0
Deep exposures of Galaxies
using the 0.8m Schulman Telescope at the Mount Lemmon SkyCenter
Credit Line & Copyright Adam Block/Mount Lemmon SkyCenter/University of ArizonaAutor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
NGC 4631
Picture Details:
Optics 24-inch RC Optical Systems Telescope Camera SBIG STL11000 CCD Camera Filters Custom Scientific Dates April 17th and 19th 2009 Location Mount Lemmon SkyCenter Exposure LRGB = 150:50:50:60 minutes Acquisition ACP Observatory Control Software (DC-3 Dreams),TheSky (Software Bisque), Maxim DL/CCD (Cyanogen) Processing CCDStack (CCDWare), Mira (MiraMetrics), Maxim DL (Cyanogen), Photoshop CS3 (Adobe) Guest Astronomers: Tom Bash and Craig GatesCredit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Arp 220 appears to be a single, odd-looking galaxy, but is in fact a nearby example of the aftermath of a collision between two spiral galaxies. It is the brightest of the three galactic mergers closest to Earth, about 250 million light-years away in the constellation of Serpens, the Serpent. The collision, which began about 700 million years ago, has sparked a cracking burst of star formation, resulting in about 200 huge star clusters in a packed, dusty region about 5,000 light-years across (about 5 percent of the Milky Way's diameter). The amount of gas in this tiny region equals the amount of gas in the entire Milky Way Galaxy. The star clusters are the bluish-white bright knots visible in the Hubble image. Arp 220 glows brightest in infrared light and is an ultra-luminous infrared galaxy. Previous Hubble observations, taken in the infrared at a wavelength that looks through the dust, have uncovered the cores of the parent galaxies 1,200 light-years apart. Observations with NASA s Chandra X-ray Observatory have also revealed X-rays coming from both cores, indicating the presence of two supermassive black holes. Arp 220 is the 220th galaxy in Arp's Atlas of Peculiar Galaxies.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
About the object | |
---|---|
Object name | Arp 220, IC 1127, VV 540, KPG 470, UGC 09913 |
Object description | Interacting Galaxies |
Position (J2000) | 15 34 57.29 +23 30 09.5 |
Constellation | Serpens |
Distance | 250 million light-years (100 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposal 10592: A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University) |
Instrument | ACS/WFC |
Exposure date(s) | January 5, 2002 |
Exposure time | 33 minutes |
Filters | F435W (B) and F814W (I) |
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Original caption from NASA: “This NASA Hubble Space Telescope image of the Antennae galaxies (NGC 4038 & 4039) is the sharpest yet of this merging pair of galaxies. During the course of the collision, billions of stars will be formed. The brightest and most compact of these star birth regions are called super star clusters.”
“ The two spiral galaxies started to interact a few hundred million years ago, making the Antennae galaxies one of the nearest and youngest examples of a pair of colliding galaxies. Nearly half of the faint objects in the Antennae image are young clusters containing tens of thousands of stars. The orange blobs to the left and right of image center are the two cores of the original galaxies and consist mainly of old stars criss-crossed by filaments of dust, which appear brown in the image. The two galaxies are dotted with brilliant blue star-forming regions surrounded by glowing hydrogen gas, appearing in the image in pink.”
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
NGC 5614
Picture Details:
Optics 32-inch Schulman Telescope (RC Optical Systems) Camera SBIG STX CCD Camera Filters AstroDon Generation II Dates April 22nd - 25th 2011 Location Mount Lemmon SkyCenter Exposure LRGB = 300:50:40:40 minutes Acquisition ACP Observatory Control Software (DC-3 Dreams),TheSky (Software Bisque), Maxim DL/CCD (Cyanogen) Processing CCDStack (CCDWare), Photoshop CS3 (Adobe) Guest Astronomers: Participants of the April 2011 Image Processing WorkshopCredit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona
Autor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
NGC 5216
Picture Details:
Optics 24-inch RC Optical Systems Telescope Camera SBIG STL11000 CCD Camera Filters Custom Scientific Dates May 20th and 21st 2010 Location Mount Lemmon SkyCenter Exposure LRGB = 270:80:70:80 minutes Acquisition TheSky (Software Bisque), Maxim DL/CCD (Cyanogen) Processing CCDStack (CCDWare), Maxim DL (Cyanogen), Photoshop CS3 (Adobe)Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Göran Nilsson & The Liverpool Telescope, Lizenz: CC BY-SA 4.0
RGB image of the galaxy NGC 772 and dwarf galaxy NGC 770 (top center) interacting. Data from the Liverpool Telescope, a 2 m RC telescope on La Palma, processed by Göran Nilsson. 86 x 100s exposures totaling 2.4 hours
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0
The sky image is obtained by Sloan Digital Sky Survey, DR14 with SciServer.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Galaxy NGC 1569 as imaged by the Hubble Space Telescope
Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
A golden egg floats above its pedestal. Here an assumed spiral galaxy has been strangely transformed in a way that makes it difficult to recognize. Its nucleus is now off center—way off center—and its arms are disorganized, forming a kind of irregular ring. The golden egg is an elliptical galaxy which is the major participant in this process.
Turned 90° clockwise I think the composition looks remarkably like a phoenix with its egg.
Some color data is available from the PanSTARRS survey: ps1images.stsci.edu/cgi-bin/ps1cutouts?pos=Apg+141&fi...
Data from the following proposal is used to create this image: Establishing HST's Low Redshift Archive of Interacting Systems
All channels: ACS/WFC F606W
North is 2.49° counter-clockwise from up.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4.5' × 6' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: ESO, Lizenz: CC BY 4.0
This image of Centaurus A, also known as NGC 5128, is an example of how frontier science can be combined with aesthetic aspects. This galaxy is a most interesting object and is being investigated by means of observations in all spectral regions, from radio via infrared and optical wavelengths to X- and gamma-rays. It is one of the most extensively studied objects in the southern sky.
(c) ESA/Hubble, CC BY 4.0
A cosmic conversatio
This image from Hubble’s Wide Field Camera 3 (WFC3) shows a spiral galaxy NGC 5917, perhaps best known for its intriguing interactions with its neighbouring galaxy MCG-01-39-003 (not visible here, but located off the bottom right of the frame — as seen here).
Mass is often confused with weight, but they are very different things. Mass is the very substance of an object and is something one always has, no matter the location. If you fly to the Moon and experience low-gravity conditions, your mass has not changed at all. What has actually changed is your weight, because weight is a force caused by the gravitational attraction of another massive body. Gravity is how objects with mass “talk” to one another. People do weigh less on the Moon, but not because they have lost any body mass — the mass of the Moon is less than that of the Earth, so it exerts a smaller gravitational pull on them.
Understanding mass is vital when it comes to understanding why objects behave the way they do in space. Without mass “talking” via gravity, the planets would not orbit the Sun, and galaxies would not interact as NGC 5917 does with its neighbour. Galaxy interactions can lead to very interesting effects; the galaxies can steal mass — in form of stars, dust and gas — from one another, distort and warp one another’s shape, or trigger immense waves of new star formation. Sometimes, a galactic duo interact so strongly that they end up colliding and merging completely. Unfortunately, if NGC 5917 is destined to merge with its celestial neighbour, it will happen much too far into the future for us to enjoy the spectacle.
Credit:
ESA/Hubble & NASA
Coordinates Position (RA): 15 21 32.89 Position (Dec): -7° 22' 42.57" Field of view: 2.33 x 1.50 arcminutes Orientation: North is 32.5° left of vertical Colours & filters Band Wavelength Telescope Optical V 555 nm Hubble Space Telescope WFC3 Optical I 814 nm Hubble Space Telescope WFC3 Infrared H 1.6 μm Hubble Space Telescope WFC3 Optical I 814 nm Hubble Space Telescope WFC3 Optical Very Broad 350 nm Hubble Space Telescope WFC3.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/NGC 3190, NGC 3189 (aka the lower part of NGC 3190), NGC 3187. Galaxies in this GALEX ultraviolet image:
- Middle NGC 3190
- Upper right (2 o'clock) NGC 3187
- Lower right (4 o'clock) NGC 3185
- Upper inner left NGC 3193 (with magnitude 9.6 star directly above it)
- Sloan Digital Sky Survey (SDSS) image of this region
Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
A large tail extending from two otherwise unperturbed-looking spirals. To the left of this group is a third member apparently involved in the interaction as indicated by the much less obvious stream extending in that direction.
Data from the following proposal is used to create this image: Establishing HST's Low Redshift Archive of Interacting Systems
All channels: ACS/WFC F606W
North is 68.30° clockwise from up.Autor/Urheber: ESO/Gems project, Lizenz: CC BY 4.0
This striking image, taken with the FORS2 instrument on the Very Large Telescope, shows a beautiful yet peculiar pair of galaxies, NGC 4438 and NGC 4435, nicknamed The Eyes. The larger of these, at the top of the picture, NGC 4438, is thought to have once been a spiral galaxy that was strongly deformed by collisions in the relatively recent past. The two galaxies belong to the Virgo Cluster and are about 50 million light-years away.
Autor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY 3.0
crop of File:N6286s.jpg
Autor/Urheber: ESO, Lizenz: CC BY 4.0
ESO’s Very Large Telescope (VLT) has captured a magnificent face-on view of the barred spiral galaxy Messier 77. The image does justice to the galaxy’s beauty, showcasing its glittering arms criss-crossed with dust lanes — but it fails to betray Messier 77’s turbulent nature.
Autor/Urheber: Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
Deep exposure of NGC 4490 using the 0.8m Schulman Telescope at the Mount Lemmon SkyCenter
- Optics 32-inch Schulman Telescope (RC Optical Systems), Acquired remotely
- Camera SBIG STX 16803 CCD Camera
- Filters AstroDon Gen II
- Dates March - April 2013
- Location Mount Lemmon SkyCenter
- Exposure LRGB = 7:2:2:2 hours
- Acquisition ACP Observatory Control Software (DC-3 Dreams),TheSky (Software Bisque), Maxim DL/CCD (Cyanogen), FlatMan XL (Alnitak)
- Processing CCDStack (CCDWare), Photoshop CS5 (Adobe), PixInsight
- Guest Astronomers Participants of the May 2013 CCD Image Processing Workshop
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 14' x 14' (0.42" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: ESO, Lizenz: CC BY 3.0
NGC 4027, also known as Arp 22, stretches its single extended spiral arm in this face-on image. Located about 75 million light-years away in the constellation of Corvus (the Crow), this barred spiral galaxy is identified as a peculiar galaxy by this extended arm, thought to be the result of a collision with another galaxy millions of years ago — most likely a small galaxy known as NGC 4027A. NGC 4027 is part of the NGC 4038 Group, a group of galaxies that also contains the famous distorted couple known as the Antennae Galaxies
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
A spiral galaxy, an edge-on disk, a few other background goodies, and a remarkable pair of dwarf galaxies. The bright pair near the right side of the frame could be an interacting pair, or, interestingly perhaps an overlapping line-of-sight pair, though I really have no way of confirming that. Pay close attention to the reddish/yellowish dust around that bright nucleus at the bottom. See how it encircles the nucleus without looking all that disturbed? Maybe they aren't interacting. Or maybe if they are, it's at an early point. Either way, it's very interesting to see backlit dust in the outskirts of a galaxy. It's usually invisible to us at these wavelengths.
Color comes from PanSTARRS this time.
Establishing HST's Low Redshift Archive of Interacting Systems
Luminosity: ACS/WFC F606W Red: PanSTARRS z Green: PanSTARRS i Blue: PanSTARRS g
North is 24.50° clockwise from up.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/This beautiful pair of interacting galaxies consists of NGC 5754, the large spiral on the right, and NGC 5752, the smaller companion in the bottom left corner of the image. NGC 5754's internal structure has hardly been disturbed by the interaction. The outer structure does exhibit tidal features, as does the symmetry of the inner spiral pattern and the kinked arms just beyond its inner ring. In contrast, NGC 5752 has undergone a starburst episode, with a rich population of massive and luminous star clusters clumping around the core and intertwined with intricate dust lanes. The contrasting reactions of the two galaxies to their interaction are due to their differing masses and sizes. NGC 5754 is located in the constellation Bootes, the Herdsman, some 200 million light-years away.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
About the object | |
---|---|
Object name | NGC 5754, NGC 5752, NGC 5752/4, Arp 297 |
Object description | Interacting Galaxies |
Position (J2000) | 14 45 19.64 +38 43 54.0 |
Constellation | Bo tes |
Distance | 200 million light-years (50 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposal 7467: W. Keel (University of Alabama, Tuscaloosa) |
Instrument | WFPC2 |
Exposure date(s) | March 14, 1999 |
Exposure time | 1.4 hours |
Filters | F435W (B) and F814W (I) |
To celebrate the Hubble Space Telescope's 16 years of success, the two space agencies involved in the project, NASA and the European Space Agency (ESA), are releasing this image of the magnificent starburst galaxy, Messier 82 (M82). This mosaic image is the sharpest wide-angle view ever obtained of M82. The galaxy is remarkable for its bright blue disk, webs of shredded clouds, and fiery-looking plumes of glowing hydrogen blasting out of its central regions.
Throughout the galaxy's center, young stars are being born 10 times faster than they are inside our entire Milky Way Galaxy. The resulting huge concentration of young stars carved into the gas and dust at the galaxy's center. The fierce galactic superwind generated from these stars compresses enough gas to make millions of more stars.
In M82, young stars are crammed into tiny but massive star clusters. These, in turn, congregate by the dozens to make the bright patches, or "starburst clumps," in the central parts of M82. The clusters in the clumps can only be distinguished in the sharp Hubble images. Most of the pale, white objects sprinkled around the body of M82 that look like fuzzy stars are actually individual star clusters about 20 light-years across and contain up to a million stars.
The rapid rate of star formation in this galaxy eventually will be self-limiting. When star formation becomes too vigorous, it will consume or destroy the material needed to make more stars. The starburst then will subside, probably in a few tens of millions of years.
Located 12 million light-years away, M82 appears high in the northern spring sky in the direction of the constellation Ursa Major, the Great Bear. It is also called the "Cigar Galaxy" because of the elliptical shape produced by the oblique tilt of its starry disk relative to our line of sight.
The observation was made in March 2006, with the Advanced Camera for Surveys' Wide Field Channel. Astronomers assembled this six-image composite mosaic by combining exposures taken with four colored filters that capture starlight from visible and infrared wavelengths as well as the light from the glowing hydrogen filaments.Autor/Urheber: Own work, Lizenz: CC BY-SA 3.0
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Image credit: NASA, ESA and the Hubble Heritage Team (STScI/AURA), Lizenz: CC BY 3.0
Hubble image of Arp 142
This image shows the two galaxies interacting. NGC 2936, once a standard spiral galaxy, and NGC 2937, a smaller elliptical, bear a striking resemblance to a penguin guarding its egg. This image is a combination of visible and infrared light, created from data gathered by the NASA/ESA Hubble Space Telescope Wide Field Planetary Camera 3 (WFC3).
Credit:
NASA, ESA and the Hubble Heritage Team (STScI/AURA)
About the Object
Name: Arp 142, NGC 2936, NGC 2937 Type: • Local Universe : Galaxy : Type : Interacting • Hubble Images Videos • Galaxies Images/Videos Distance: 400 million light years
Colours & filters Band Wavelength Telescope
Optical B 475 nm Hubble Space Telescope WFC3 Optical V 606 nm Hubble Space Telescope WFC3 Infrared I 814 nm Hubble Space Telescope WFC3.
(c) ESA/Hubble, CC BY 4.0
A recent NASA/ESA Hubble Space Telescope image captures what appears to be one very bright and bizarre galaxy, but is actually the result of a pair of spiral galaxies that resemble our own Milky Way smashing together at breakneck speeds. The product of this dramatic collision, called NGC 2623, or Arp 243, is about 250 million light-years away in the constellation of Cancer (the Crab).
This Hubble Picture of the Week— taken using NASA/ESA Hubble Space Telescope’s Advanced Camera for Surveys (ACS) — shows Arp 107, a celestial object that comprises a pair of galaxies in the midst of a collision. The larger galaxy (in the left of this image) is an extremely energetic galaxy type known as a Seyfert galaxy, which house active galactic nuclei at their cores. Seyfert galaxies are notable because despite the immense brightness of the active core, radiation from the entire galaxy can be observed. This is evident in this image, where the spiraling whorls of the whole galaxy are readily visible. The smaller companion is connected to the larger by a tenuous-seeming ‘bridge’, composed of dust and gas. The colliding galactic duo lie about 465 million light-years from Earth.
Arp 107 is part of a catalogue of 338 galaxies known as the Atlas of Peculiar Galaxies, which was compiled in 1966 by Halton Arp.It was observed by Hubble as part of an observing programme that specifically sought to fill in an observational ‘gap’, by taking limited observations of members of the Arp catalogue. Part of the intention of the observing programme was to provide the public with images of these spectacular andnot-easily-defined galaxies, and as such, it has provided a rich source for Hubble Pictures of the Week. In fact, several recent releases, including this one and this one, have made use of observations from the same observing programme.
[Image Description: A pair of merging galaxies. The galaxy on the left has a large, single spiral arm curving out from the core and around to below it, with very visible glowing dust and gas. The right galaxy has a bright core but only a bit of very faint material. A broad curtain of gas connects the two galaxies’ cores and hangs beneath them. A few smallstars and galaxies are scattered around the black background.]
Credit: ESA/Hubble & NASA, J. DalcantonAutor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: ESO, Lizenz: CC BY 4.0
Colour composite image of the spiral galaxy M 66 (or NGC 3627) obtained with the FORS1 and FORS2 multi-mode instruments (at VLT MELIPAL and YEPUN, respectively). NGC 3627 is located in the constellation Leo (The Lion). It is a beautiful spiral with a well-developed central bulge. It also displays large-scale dust lanes. Many regions of warm hydrogen gas are seen throughout the disc of this galaxy. The latter regions are being ionised by radiation from clusters of newborn stars. North towards upper left, West towards upper right.
ID: phot-33c-03-fullres
Size: 2300x2294
Credit: ESOAutor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/NGC 5257/8 (Arp 240) is an astonishing galaxy pair, composed of spiral galaxies of similar mass and size, NGC 5257 and NGC 5258. The galaxies are visibly interacting with each other via a bridge of dim stars connecting the two galaxies, almost like two dancers holding hands while performing a pirouette. Both galaxies harbor supermassive black holes in their centers and are actively forming new stars in their disks. Arp 240 is located in the constellation Virgo, approximately 300 million light-years away, and is the 240th galaxy in Arp's Atlas of Peculiar Galaxies. With the exception of a few foreground stars from our own Milky Way all the objects in this image are galaxies.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
About the object | |
---|---|
Object name | NGC 5257, NGC 5257/8, Arp 240, VV 055, KPG 389 |
Object description | Interacting Galaxies |
Position (J2000) | 13 39 55.68 +00 50 03.9 |
Constellation | Virgo |
Distance | 300 million light-years (100 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposal 10592: A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University) |
Instrument | ACS/WFC |
Exposure date(s) | December 20, 2001 |
Exposure time | 33 minutes |
Filters | F435W (B) and F814W (I) |
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: ESO, Lizenz: CC BY 4.0
FORS2, an instrument mounted on ESO’s Very Large Telescope captured the spiral galaxy NGC 3981 in all its glory. The image, captured during the ESO Cosmic Gems Programme, showcases the beauty of the southern skies when conditions don’t allow scientific observations to be made.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0
The sky image is obtained by Sloan Digital Sky Survey, DR14 with SciServer.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: ESO/INAF-VST/OmegaCAM. Acknowledgement: OmegaCen/Astro-WISE/Kapteyn Institute, Lizenz: CC BY 3.0
Triplet of bright galaxies in the constellation of Leo (The Lion), together with a multitude of fainter objects: distant background galaxies and much closer Milky Way stars. The image hints at the power of the VST and OmegaCAM for surveying the extragalactic Universe and for mapping the low brightness objects of the galactic halo. This image is a composite created by combining exposures taken through three different filters. Light that passed through a near-infrared filter was coloured red, light in the red part of the spectrum is coloured green, and green light is coloured magenta.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: unknown, Lizenz: CC BY 4.0
Galactic Dance Image of the interacting galaxy pair NGC 5394/5 obtained with NSF’s NOIRLab's Gemini North 8-meter telescope on Hawai’i’s Maunakea using the Gemini Multi-Object Spectrograph in imaging mode. This four-color composite image has a total exposure time of 42 minutes.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 6' × 6' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 13.2' × 13.2' (0.396" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
NGC 70 - Crop
Picture Details:
Optics 24-inch RC Optical Systems Telescope Camera SBIG STL11000 CCD Camera Filters Custom Scientific Dates September 17th 2009 Location Mount Lemmon SkyCenter Exposure LRGB = 135:50:40:50 minutes Acquisition ACP Observatory Control Software (DC-3 Dreams),TheSky (Software Bisque), Maxim DL/CCD (Cyanogen) Processing CCDStack (CCDWare), Mira (MiraMetrics), Maxim DL (Cyanogen), Photoshop CS3 (Adobe) Guest Astronomers: Chris and Joe Scullion Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of ArizonaThis image was created during a CCD image processing workshop at the Mount Lemmon SkyCenter. For more information visit http://SkyCenter.arizona.edu.
(c) ESA/Hubble, CC BY 4.0
The galaxy Messier 101 (M101, also known as NGC 5457 and also nicknamed the Pinwheel Galaxy) lies in the northern circumpolar constellation, Ursa Major (The Great Bear), at a distance of about 21 million light-years from Earth. This is one of the largest and most detailed photos of a spiral galaxy that have been released from Hubble. The galaxy's portrait is actually composed of 51 individual Hubble exposures, in addition to elements from images from ground-based photos. A high-res version with 15852 x 12392 pixels in jpg and tiff format is also available, see below for url.
(c) ESA/Hubble, CC BY 4.0
Colliding galaxies
Located in the constellation of Hercules, about 230 million light-years away, NGC 6052 is a pair of colliding galaxies. They were first discovered in 1784 by William Herschel and were originally classified as a single irregular galaxy because of their odd shape. However, we now know that NGC 6052 actually consists of two galaxies that are in the process of colliding. This particular image of NGC 6052 was taken using the Wide Field Camera 3 on the NASA/ESA Hubble Space Telescope.
A long time ago gravity drew the two galaxies together into the chaotic state we now observe. Stars from within both of the original galaxies now follow new trajectories caused by the new gravitational effects. However, actual collisions between stars themselves are very rare as stars are very small relative to the distances between them (most of a galaxy is empty space). Eventually things will settle down and one day the two galaxies will have fully merged to form a single, stable galaxy.
Our own galaxy, the Milky Way, will undergo a similar collision in the future with our nearest galactic neighbour, the Andromeda Galaxy. Although this is not expected to happen for around 4 billion years so there is nothing to worry about just yet.
This object was previously observed by Hubble with its old WFPC2 camera. That image was released in 2015.
Credit:
ESA/Hubble & NASA, A. Adamo et al.
Coordinates Position (RA): 16 5 12.53 Position (Dec): 20° 32' 30.43" Field of view: 1.62 x 1.28 arcminutes Orientation: North is 45.0° left of vertical
Colours & filters Band Wavelength Telescope Optical U 336 nm Hubble Space Telescope WFC3 Optical B 438 nm Hubble Space Telescope WFC3 Optical V 555 nm Hubble Space Telescope WFC3 Optical H-alpha 665 nm Hubble Space Telescope WFC3 Optical I 814 nm Hubble Space Telescope WFC3.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Own work, Lizenz: CC BY-SA 3.0
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
Autor/Urheber: (Credit) ESA/Hubble and NASA, Dark Energy Survey, J. Dalcanton, Lizenz: CC BY 4.0
Hubble Spies a Pair of Squabbling Galaxies
This observation from the NASA/ESA Hubble Space Telescope showcases Arp 86, a peculiar pair of interacting galaxies which lies roughly 220 million light-years from Earth in the constellation Pegasus. Arp 86 is composed of the two galaxies NGC 7752 and NGC 7753 — NGC 7753 is the large spiral galaxy dominating this image, and NGC 7752 is its smaller companion. The diminutive companion galaxy almost appears to be attached to NGC 7753, and it is this peculiarity that has earned the designation “Arp 86” — signifying that the galaxy pair appears in the Atlas of Peculiar Galaxies compiled by the astronomer Halton Arp in 1966. The gravitational squabble between the two galaxies is doomed to end catastrophically for NGC 7752. It will eventually either be flung out into intergalactic space or be entirely engulfed by its far larger neighbour.
Hubble observed Arp 86 as part of a larger effort to understand the connections between young stars and the clouds of cold gas in which they form. Hubble gazed into star clusters and clouds of gas and dust in a variety of environments dotted throughout nearby galaxies. Combined with measurements from ALMA, a gigantic radio telescope perched high in the Chilean Andes, these Hubble observations provide a treasure trove of data for astronomers working to understand how stars are born.
These observations also helped sow the seeds of future research with an upcoming space telescope, the NASA/ESA James Webb Space Telescope (JWST). This telescope, due to launch later this year, will study star formation in dusty regions such as the galaxies of Arp 86.
Credit:
ESA/Hubble and NASA, Dark Energy Survey, J. Dalcanton
Coordinates Position (RA): 23 47 2.82 Position (Dec): 29° 28' 34.43" Field of view: 3.26 x 3.23 arcminutes Orientation: North is 1.7° right of vertical Colours & filters Band Wavelength Telescope Optical u 354 nm SDSS Optical G 474 nm Víctor M. Blanco 4-meter Telescope DECam Optical G 477 nm SDSS Optical R 644 nm Víctor M. Blanco 4-meter Telescope DECam Optical R 623 nm SDSS Optical I 762 nm SDSS Optical Z 913 nm SDSS Optical Z 919 nm Víctor M. Blanco 4-meter Telescope DECam Optical V 606 nm Hubble Space Telescope ACS.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/IC 883 displays a very disturbed, complex central region with two tidal tails of approximately the same length emerging at nearly right angles: one diagonally to the top right of the frame and the other to the bottom right. The twin tidal tails suggest that IC 883 is the remnant of the merger of two gas-rich disk galaxies. The collision appears to have triggered a burst of star formation, indicated by a number of bright star clusters in the central region. IC 883 is 300 million light-years away toward the constellation of Canes Venatici, the Hunting Dogs. It is Number 193 in Arp's Atlas of Peculiar Galaxies.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
About the object | |
---|---|
Object name | IC 883, UGC 08387, Arp 193, VV 821, I Zw 056 |
Object description | Interacting Galaxies |
Position (J2000) | 13 20 35.54 +34 08 21.5 |
Constellation | Canes Venatici |
Distance | 300 million light-years (100 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposal 10592: A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University) |
Instrument | ACS/WFC |
Exposure date(s) | January 10, 2002 |
Exposure time | 34 minutes |
Filters | F435W (B) and F814W (I) |
Interacting Galaxy Pair Arp 65
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 12' x 12' (0.3515625" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/SDSS NGC 5579
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Arp 256 is a stunning system of two spiral galaxies in an early stage of merging. The Hubble image displays two galaxies with strongly disrupted shapes and an astonishing number of blue knots of star formation that look like exploding fireworks. The galaxy to the left has two extended ribbon-like tails of gas, dust and stars. The system is a luminous infrared system radiating more than a hundred billion times the luminosity of our Sun. Arp 256 is located in the constellation of Cetus, the Whale, about 350 million light-years away. It is the 256th galaxy in Arp's Atlas of Peculiar Galaxies.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
About the object | |
---|---|
Object name | Arp 256, VV 352, MCG-02-01-051 |
Object description | Interacting Galaxies |
Position (J2000) | 00 18 50.53 -10 22 05.3 |
Constellation | Cetus |
Distance | 350 million light-years (100 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposal 10592: A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University) |
Instrument | ACS/WFC |
Exposure date(s) | May 22, 2002 |
Exposure time | 33 minutes |
Filters | F435W (B) and F814W (I) |
NGC 5560(top galaxy) and NGC 5566(middle galaxy) and NGC 5569(bottom galaxy) from GALEX
(c) ESA/Hubble, CC BY 4.0
This new NASA/ESA Hubble Space Telescope image shows four of the seven members of galaxy group HCG 16.
This quartet is composed of (from left to right) NGC 839, NGC 838, NGC 835, and NGC 833 — four of the seven galaxies that make up the entire group. They shine brightly with their glowing golden centres and wispy tails of gas, set against a background dotted with much more distant galaxies.
This new image uses observations from Hubble's Wide Field Planetary Camera 2 combined with data from the ESO Multi-Mode Instrument, installed on the European Southern Observatory's New Technology Telescope in Chile.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Fabian RRRR, Lizenz: CC BY-SA 3.0
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
Arp 148 is the staggering aftermath of an encounter between two galaxies, resulting in a ring-shaped galaxy and a long-tailed companion. The collision between the two parent galaxies produced a shockwave effect that first drew matter into the center and then caused it to propagate outwards in a ring. The elongated companion perpendicular to the ring suggests that Arp 148 is a unique snapshot of an ongoing collision. Infrared observations reveal a strong obscuration region that appears as a dark dust lane across the nucleus in optical light. Arp 148 is nicknamed Mayall s object and is located in the constellation of Ursa Major, the Great Bear, approximately 500 million light-years away. This interacting pair of galaxies is included in Arp's catalog of peculiar galaxies as number 148.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
About the object | |
---|---|
Object name | Arp 148, VV 032, Mayall's Object, MCG+07-23-019 |
Object description | Interacting Galaxies |
Position (J2000) | 11 03 53.95 +40 50 59.90 |
Constellation | Ursa Major |
Distance | 450 million light-years (150 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposals 10592, 11091, and 6276: A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University), K. Noll (STScI), and J. Westphal (Caltech) |
Instrument | WFPC2, ACS/WFC |
Exposure date(s) | October 9/10, 1995; November 20, 2005; and April 27-29, 2007 |
Exposure time | 10.3 hours |
Filters | F336W (U), F450W (B), F606W (V), and F814W (I) |
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 6' × 6' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: NASA, ESA, Lizenz: CC BY 3.0
Galaxienpaar Arp 116 bestehend aus der elliptischen Galaxie M60 und der Sprialgalaxie NGC 4647
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
NASA's Hubble Space Telescope is back in business.
Just a couple of days after the orbiting observatory was brought back online, Hubble aimed its prime working camera, the Wide Field Planetary Camera 2 (WFPC2), at a particularly intriguing target, a pair of gravitationally interacting galaxies called Arp 147.
The image demonstrated that the camera is working exactly as it was before going offline, thereby scoring a "perfect 10" both for performance and beauty.
The two galaxies happen to be oriented so that they appear to mark the number 10. The left-most galaxy, or the "one" in this image, is relatively undisturbed apart from a smooth ring of starlight. It appears nearly on edge to our line of sight. The right-most galaxy, resembling a zero, exhibits a clumpy, blue ring of intense star formation.
The blue ring was most probably formed after the galaxy on the left passed through the galaxy on the right. Just as a pebble thrown into a pond creates an outwardly moving circular wave, a propagating density wave was generated at the point of impact and spread outward. As this density wave collided with material in the target galaxy that was moving inward due to the gravitational pull of the two galaxies, shocks and dense gas were produced, stimulating star formation.
The dusty reddish knot at the lower left of the blue ring probably marks the location of the original nucleus of the galaxy that was hit.
Arp 147 appears in the Arp Atlas of Peculiar Galaxies, compiled by Halton Arp in the 1960s and published in 1966. This picture was assembled from WFPC2 images taken with three separate filters. The blue, visible-light, and infrared filters are represented by the colors blue, green, and red, respectively.
The galaxy pair was photographed on October 27-28, 2008. Arp 147 lies in the constellation Cetus, and it is more than 400 million light-years away from Earth.Portrait orientation of File:Antennae 1997-34-a-full jpg.jpg
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Image of Arp 87, a system of two galaxies: NGC 3808A (right) and NGC 3808B (left). The galaxies are embracing due to their individual gravitational pulls.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Holmberg II / UGC 4305
Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
A dwarf galaxy bustling with star formation, as evidenced by the tendrils of emission nebula appearing green here due to the choice of filters. The emission must be very strong indeed, for it is visible even in wideband color. A narrowband filter would bring out a lot of details in the nebula.
In my own mind I call these star seams due to their linear appearance and the way the nebula tends to look like it is flowing out from the vein of star formation. You can see a spectacular example of one of these with appropriate narrowband filters included here: flickr.com/p/pTDvDs
Color comes from this SDSS field: dr12.sdss.org/fields/name?name=arp+163
HST Proposal: Establishing HST's Low Redshift Archive of Interacting Systems
Luminosity: ACS/WFC F606W Red: SDSS i Green: SDSS r Blue: SDSS g
North is 20.91° clockwise from up.Autor/Urheber: ESO, Lizenz: CC BY 4.0
This new image shows the results of a vast collision between two galaxies. This strange object is known as NGC 7252, or Arp 226, and has the odd nickname Atoms-for-Peace. The picture was taken by the Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in Chile. It is a combination of exposures taken through blue and red filters, for a total exposure time of more than four hours. The field of view is about 18 arcminutes across.
Autor/Urheber:
Credit:
ESA/Hubble & NASA, A. Riess et al., Lizenz: CC BY 4.0A Peculiar Sight
This week’s Hubble/ESA Picture of the Week features NGC 7678 — a galaxy located approximately 164 million light-years away in the constellation of Pegasus (The Winged Horse). With a diameter of around 115 000 light-years, this bright spiral galaxy is a similar size to our own galaxy (the Milky Way), and was discovered in 1784 by the German-British astronomer William Herschel.
The Atlas of Peculiar Galaxies is a catalogue which was produced in 1966 by the American astronomer Halton Arp. NGC 7678 is among the 338 galaxies presented in this catalogue, which organises peculiar galaxies according to their unusual features. Catalogued here as Arp 28, this galaxy is listed together with six others in the group “spiral galaxies with one heavy arm”.
Credit:
ESA/Hubble & NASA, A. Riess et al.
Coordinates Position (RA): 23 28 28.13 Position (Dec): 22° 25' 18.58"
Colours & filters Band Wavelength Telescope Optical Long pass 350 nm Hubble Space Telescope WFC3 Optical V 555 nm Hubble Space Telescope WFC3 Optical I 814 nm Hubble Space Telescope WFC3 Infrared H 1.6 μm Hubble Space Telescope WFC3.
NGC 7674 (seen just above the center), also known as Markarian 533, is the brightest and largest member of the so-called Hickson 96 compact group of galaxies, consisting of four galaxies. This stunning Hubble image shows a spiral galaxy nearly face-on. The central bar-shaped structure is made up of stars. The shape of NGC 7674, including the long narrow streamers seen to the left of and below the galaxy can be accounted for by tidal interactions with its companions. NGC 7674 has a powerful active nucleus of the kind known as a type 2 Seyfert that is perhaps fed by gas drawn into the center through the interactions with the companions. NGC 7674 falls into the family of luminous infrared galaxies and is featured in Arp's Atlas of Peculiar Galaxies as number 182. It is located in the constellation of Pegasus, the Winged Horse, about 400 million light-years away from Earth.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
About the object | |
---|---|
Object name | NGC 7674, Mrk 533, HCG 96, Arp 182, VV 343a |
Object description | Interacting Galaxies |
Position (J2000) | 23 27 56.88 +08 46 46.5 |
Constellation | Pegasus |
Distance | 350 million light-years (100 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposal 10592: A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University) |
Instrument | ACS/WFC |
Exposure date(s) | June 9, 2002 |
Exposure time | 33 minutes |
Filters | F435W (B) and F814W (I) |
Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
An interacting pair of galaxies also known as NGC 2799 (left) & NGC 2798 (right). NGC 2799 appears warped, and seems to be getting ripped apart. Rain comes to mind when looking at this, like the stars and gas of the blue galaxy are mere particles condensing and falling into the red galaxy like rain. It's probably nothing like rain, though.
Color comes from SDSS this time, which is always a pleasure. As far as surveys go, it's very easy to work with. Data for this field can be found here: dr12.sdss.org/fields/name?name=ngc+2799
NASA/ESA/SDSS/Judy Schmidt
Establishing HST's Low Redshift Archive of Interacting Systems
Luminosity: ACS/WFC F606W Red: SDSS i Green: SDSS r Blue: SDSS g
North is 13.50° clockwise from up.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 10' × 10' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/This system consists of a pair of galaxies, dubbed IC 694 and NGC 3690, which made a close pass some 700 million years ago. As a result of this interaction, the system underwent a fierce burst of star formation. In the last fifteen years or so six supernovae have popped off in the outer reaches of the galaxy, making this system a distinguished supernova factory. Arp 299 belongs to the family of ultra-luminous infrared galaxies and is located in the constellation of Ursa Major, the Great Bear, approximately 150 million light-years away. It is the 299th galaxy in Arp's Atlas of Peculiar Galaxies. Despite its enormous amount of absorbing dust, enough violet and near-ultraviolet light leaks out for it to be number 171 in B.E. Markarian's catalog of galaxies with excess ultraviolet emission.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
About the object | |
---|---|
Object name | NGC 3690, IC 694, Mrk 171, Arp 299, VV 118, KPG 288 |
Object description | Interacting Galaxies |
Position (J2000) | 11 28 32.10 +58 33 46.9 |
Constellation | Ursa Major |
Distance | 150 million light-years (50 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposal 10592: A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University) |
Instrument | ACS/WFC |
Exposure date(s) | March 18, 2002 |
Exposure time | 38 minutes |
Filters | F435W (B) and F814W (I) |
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
NGC 1961
Picture Details:
Optics 24-inch RC Optical Systems Telescope Camera SBIG STL11000 CCD Camera Filters Custom Scientific Dates January 5th 2010 Location Mount Lemmon SkyCenter Exposure LRGB: 135:60:40:50 Acquisition ACP Observatory Control Software (DC-3 Dreams),TheSky (Software Bisque), Maxim DL/CCD (Cyanogen) Processing CCDStack (CCDWare), Mira (MiraMetrics), Photoshop CS3 (Adobe)Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona
NGC 6050/IC 1179 (Arp 272) is a remarkable collision between two spiral galaxies, NGC 6050 and IC 1179, and is part of the Hercules Galaxy Cluster, located in the constellation of Hercules. The galaxy cluster is part of the Great Wall of clusters and superclusters, the largest known structure in the universe. The two spiral galaxies are linked by their swirling arms. Arp 272 is located some 450 million light-years away from Earth and is the number 272 in Arp's Atlas of Peculiar Galaxies.
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
- Left: NGC 6050A
- Right: NGC 6050B
About the object | |
---|---|
Object name | NGC 6050, IC 1179, Arp 272 |
Object description | Interacting Galaxies |
Position (J2000) | 16 05 22.97 +17 45 27.2 |
Constellation | Hercules |
Distance | 150 million light-years (50 million parsecs) |
About the data | |
Data description | The Hubble image was created using HST data from proposal 11095: K. Noll (STScI) |
Instrument | WFPC2 |
Exposure date(s) | February 12 - 14, 2007 |
Exposure time | 5 hours |
Filters | F435W (B) and F814W (I) |
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0
The sky image is obtained by Sloan Digital Sky Survey, DR14 with SciServer.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber:
Credit: Credit: ESA/Hubble & NASA, P. Sell
Acknowledgement: L. Shatzz, Lizenz: CC BY 4.0Hubble Captures NGC 2276
This spectacular image from the NASA/ESA Hubble Space Telescope shows the trailing arms of NGC 2276, a spiral galaxy 120 million light-years away in the constellation of Cepheus. At first glance, the delicate tracery of bright spiral arms and dark dust lanes resembles countless other spiral galaxies. A closer look reveals a strangely lopsided galaxy shaped by gravitational interaction and intense star formation.
Credit:
ESA/Hubble & NASA, P. Sell Acknowledgement: L. Shatz
Coordinates Position (RA): 7 27 33.61 Position (Dec): 85° 45' 29.95" Field of view: 2.52 x 2.70 arcminutes Orientation: North is 151.0° left of vertical
Colours & filters Band Wavelength Telescope Ultraviolet UV 275 nm Hubble Space Telescope WFC3 Optical U 336 nm Hubble Space Telescope WFC3 Optical B 438 nm Hubble Space Telescope WFC3 Optical V 555 nm Hubble Space Telescope WFC3 Optical I 814 nm Hubble Space Telescope WFC3.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0
The sky image is obtained by Sloan Digital Sky Survey, DR14 with SciServer.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
NGC 2276
Picture Details:
Optics 32-inch Schulman Telescope (RC Optical Systems), Acquired remotely Camera SBIG STX 16803 CCD Camera Filters AstroDon Gen II Dates December 2013 Location Mount Lemmon SkyCenter Exposure LRGB = 8:4:4:4 hours Acquisition ACP Observatory Control Software (DC-3 Dreams), Maxim DL/CCD (Cyanogen), FlatMan XL (Alnitak) Processing CCDStack (CCDWare), Photoshop CC (Adobe), PixInsight Guest Astronomers Doug Obal Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona.
Autor/Urheber: NASA/ESA/Hubble, Judy Schmidt, Lizenz: CC BY 2.0
Hubble image of galaxy IC 356. This galaxy appears as it does due to its light being seen through the disk of the Milky Way galaxy; the intervening gas and dust causes its light to be dimmed and reddened. This image is comprised of Hubble observations HST_9788_01_ACS_WFC_F658N_sci and HST_9788_01_ACS_WFC_F814W_sci.
Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
A couple of entwined galaxies proceeding with their mergence. The two tails appear to wrap all the way around the left side of the galaxies and connect back where that background spiral appears at the bottom of the image. They'd be off the left and bottom sides of the frame if you could see them, but the exposure wasn't quite long enough to capture such faint features.
This is part of a snapshot / gap filler program for Julianne Dalcanton involving the study of peculiar galaxies which HST had never observed before. Only one filter is available for each, so color must come from elsewhere. In this case, I used the PanSTARRS survey to quickly add some color. You can see that many of the fine details in the image are lacking distinctive colors due to the lower resolution of the color data.
All of the observations from this proposal are available immediately to the public, so it can be fun to poke around. In fact HST took this image only a few hours before I made this image, and less than 24 hours before I posted it here.
Here's a link to the proposal abstract: Establishing HST's Low Redshift Archive of Interacting Systems
Luminosity: ACS/WFC F606W Red: PanSTARRS z Green: PanSTARRS i Blue: PanSTARRS g
North is up.(c) ESA/Hubble, CC BY 4.0
The lesser-known constellation of Canes Venatici (The Hunting Dogs), is home to a variety of deep-sky objects — including this beautiful galaxy, known as NGC 4861. Astronomers are still debating on how to classify it: While its physical properties — such as mass, size and rotational velocity — indicate it to be a spiral galaxy, its appearance looks more like a comet with its dense, luminous “head” and dimmer “tail” trailing behind. Features more fitting with a dwarf irregular galaxy.
Although small and messy, galaxies like NGC 4861 provide astronomers with interesting opportunities for study. Small galaxies have lower gravitational potentials, which simply means that it takes less energy to move stuff about inside them than it does in other galaxies. As a result, moving in, around, and through such a tiny galaxy is quite easy to do, making them far more likely to be suffused with streams and outflows of speedy charged particles known as galactic winds, which can flood such galaxies with little effort.
These galactic winds can be powered by the ongoing process of star formation, which involves huge amounts of energy. New stars are springing into life within the bright, colourful ‘head’ of NGC 4861 and ejecting streams of high-speed particles as they do so, which flood outwards to join the wider galactic wind. While NGC 4861 would be a perfect candidate to study such winds, recent studies did not find any galactic winds in it.
Credit:
ESA/Hubble & NASA
Coordinates Position (RA): 12 59 2.76 Position (Dec): 34° 51' 46.80" Field of view: 3.24 x 2.59 arcminutes Orientation: North is 80.3° right of vertical
Colours & filters Band Wavelength Telescope Optical V 606 nm Hubble Space Telescope ACS Optical V 606 nm Hubble Space Telescope ACS Optical I 814 nm Hubble Space Telescope ACS Optical NII 658 nm Hubble Space Telescope WFC3 Optical SII 673 nm Hubble Space Telescope WFC3 Optical I 814 nm Hubble Space Telescope ACS.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Fabian RRRR, Lizenz: CC BY-SA 3.0
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
Over the past 19 years Hubble has taken dozens of exotic pictures of galaxies going "bump in the night" as they collide with each other and have a variety of close encounters of the galactic kind. Just when you thought these interactions couldn't look any stranger, this image of a trio of galaxies, called Arp 194, looks like one of the galaxies has sprung a leak. The bright blue streamer is really a stretched spiral arm full of newborn blue stars. This typically happens when two galaxies interact and gravitationally tug at each other. Resembling a pair of owl eyes, the two nuclei of the colliding galaxies can be seen in the process of merging at the upper left. The blue bridge looks like it connects to a third galaxy. In reality the galaxy is in the background and not connected at all. Hubble's sharp view allows astronomers to try and visually sort out what are foreground and background objects when galaxies, superficially, appear to overlap. This picture was issued to celebrate the 19th anniversary of the launch of the Hubble Space Telescope aboard the space shuttle Discovery in 1990. During the past 19 years Hubble has made more than 880,000 observations and snapped over 570,000 images of 29,000 celestial objects.
Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
A rather tight grouping of galaxies. Looks like some interaction or merging is about to occur.
A widefield color view is available here: legacysurvey.org/viewer?ra=13.4515&dec=-13.8561&l...
Establishing HST's Low Redshift Archive of Interacting Systems
All Channels: ACS/WFC F606W
North is 32.05° counter-clockwise from up.Hubble Peers Through Giant Elliptical’s Layers
Bright, white diffuse sphere with an extremely bright core. Diffuse shells of matter form layers around the core
This new NASA Hubble Space Telescope image captures the central region of the gigantic elliptical galaxy NGC 474. Located some 100 million light-years from Earth, NGC 474 spans about 250,000 light-years across – that’s 2.5 times larger than our own Milky Way galaxy! Along with its enormous size, NGC 474 has a series of complex layered shells that surround its spherical-shaped core. The cause of these shells is unknown, but astronomers theorize that they may be the aftereffects of the giant galaxy absorbing one or more smaller galaxies. In the same way a pebble creates ripples on a pond when dropped into the water, the absorbed galaxy creates waves that form the shells.
About 10% of elliptical galaxies have shell structures, but unlike the majority of elliptical galaxies, which are associated with galaxy clusters, shelled ellipticals usually lie in relatively empty space. It may be that they’ve cannibalized their neighbors.
The image was created using data from Hubble’s Advanced Camera for Surveys. Additional gap-filling data was provided by Hubble’s Wide Field and Planetary Camera 2 and Wide Field Camera 3. The color blue represents visible blue light while the color orange represents near infrared light.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Like dust bunnies that lurk in corners and under beds, surprisingly complex loops and blobs of cosmic dust lie hidden in the giant elliptical galaxy NGC 1316. This image made from data obtained with the NASA/ESA Hubble Space Telescope reveals the dust lanes and star clusters of this giant galaxy that give evidence that it was formed from a past merger of two gas-rich galaxies.
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/(c) ESA/Hubble, CC BY 4.0
A dramatic triplet of galaxies takes centre stage in this latest Picture of the Week from the NASA/ESA Hubble Space Telescope, which captures a three-way gravitational tug-of-war between interacting galaxies. This system—known as Arp 195— is featured in the Atlas of Peculiar Galaxies, a list which showcases some of the weirder and more wonderful galaxies in the universe. Observing time with the Hubble Space Telescope is extremely valuable, so astronomers don't want to waste a second. The schedule for Hubble observations is calculated using a computer algorithm which allows the spacecraft to occasionally gather bonus snapshots of data between longer observations. This image of the clashing triplet of galaxies in Arp 195 is one such snapshot. Extra observations such as these do more than provide spectacularimages — they also help to identify promising targets to follow up with telescopes such as the upcoming NASA/ESA/CSA James Webb Space Telescope. Links Video of Squabbling Galactic Siblings
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0
The sky image is obtained by Sloan Digital Sky Survey, DR14 with SciServer.
Autor/Urheber: NASA on The Commons, Lizenz: No restrictions
(October 26, 1999) Hubble Space Telescope's exquisite resolution has allowed astronomers to resolve, for the first time, hot blue stars deep inside an elliptical galaxy. The swarm of nearly 8,000 blue stars resembles a blizzard of snowflakes near the core (lower right) of the neighboring galaxy M32, located 2.5 million light-years away in the constellation Andromeda. Hubble confirms that the ultraviolet light comes from a population of extremely hot helium-burning stars at a late stage in their lives. Unlike the Sun, which burns hydrogen into helium, these old stars exhausted their central hydrogen long ago, and now burn helium into heavier elements. The observations, taken in October 1998, were made with the camera mode of the Space Telescope Imaging Spectrograph (STIS) in ultraviolet light. The STIS field of view is only a small portion of the entire galaxy, which is 20 times wider on the sky. For reference, the full moon is 70 times wider than the STIS field-of-view. Thirty years ago, the first ultraviolet observations of elliptical galaxies showed that they were surprisingly bright when viewed in ultraviolet light. Before those pioneering UV observations, old groups of stars were assumed to be relatively cool and thus extremely faint in the ultraviolet. Over the years since the initial discovery of this unexpected ultraviolet light, indirect evidence has accumulated that it originates in a population of old, but hot, helium-burning stars. Now Hubble provides the first direct visual evidence.
Image # : PR99-40Autor/Urheber: Judy Schmidt, Lizenz: CC BY 2.0
A breathtakingly dimensional interaction between two galaxies. Our point of view combined with the tidal strands connecting the two galaxies provides us with a rarely discernable (among deep space imagery) feel of positionality, foreground, and background.
Data provided by the fruitfully formidable Proposal 15446. Establishing HST's Low Redshift Archive of Interacting Systems
Color obtained from the generally generous Legacy Survey. LS data were also used to smooth out and enhance the noisier, darker parts of the image.
All channels: ACS/WFC F606W Red: Legacy Survey z Green: Legacy Survey r Blue: Legacy Survey g
North is 18.41° counter-clockwise from up.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: European Southern Observatory, Lizenz: CC BY 4.0
This spectacular image of the large spiral galaxy NGC 1232 was obtained on September 21, 1998, during a period of good observing conditions. It is based on three exposures in ultra-violet, blue and red light, respectively. The colours of the different regions are well visible : the central areas contain older stars of reddish colour, while the spiral arms are populated by young, blue stars and many star-forming regions. Note the distorted companion galaxy on the left side, shaped like the greek letter "theta".
NGC 1232 is located 20º south of the celestial equator, in the constellation Eridanus (The River). The distance is about 60 million light-years, but the excellent optical quality of the VLT and FORS allows us to see an incredible wealth of details. At the indicated distance, the edge of the field shown corresponds to about 200,000 light-years, or about twice the size of the Milky Way galaxy.
The image is a composite of three images taken behind three different filters: U (360 nm; 10 min), B (420 nm; 6 min) and R (600 nm; 2:30 min) during a period of 0.7 arcsec seeing. The field shown measures 6.8 x 6.8 arcmin. North is up; East is to the left.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Barred Spiral Galaxy NGC 6217 by Hubble Space Telescope
This is the first image of a celestial object taken with the newly repaired Advanced Camera for Surveys (ACS). The camera was restored to operation during the STS-125 servicing mission to upgrade the Hubble Space Telescope.
The barred spiral galaxy NGC 6217 was photographed on June 13 and July 8, 2009, as part of the initial testing and calibration of Hubble's ACS. The galaxy lies 6 million light-years away in the north circumpolar constellation Ursa Major.Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
A soft, fluffy, irregular dwarf galaxy with a few areas of star formation. Could be a nice place to live.
NASA/ESA/SDSS/Judy Schmidt
Color comes from this SDSS field: dr12.sdss.org/fields/name?name=arp+264
HST Proposal: Establishing HST's Low Redshift Archive of Interacting Systems
Luminosity: ACS/WFC F606W Red: SDSS i Green: SDSS r Blue: SDSS g
North is 59.29° counter-clockwise from up.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 10' × 10' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/NGC 5679 / Arp 274
Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0
We'd trade away the sky if we thought it would save us.
Data from the following proposal is used to create this image: Establishing HST's Low Redshift Archive of Interacting Systems
All channels: ACS/WFC F606W
North is 17.62° counter-clockwise from up.Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0

Angle of view: 4' × 4' (0.3" per pixel), north is up.
Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/