407310main jsc2009e243551

Autor/Urheber:

NASA/David McKay

Shortlink:

https://dewiki.de/b/187c6f

Quelle:

Wikimedia Commons

Größe:

1280 x 1024 Pixel (292726 Bytes)

Beschreibung:

This is a scanning electron microscope (SEM) image of a series of partly filled pits on the surface of a mineral grain from Nakhla. Similar pits are sometimes found on Earth minerals which have been exposed to microbial attack. They are interpreted as etch features caused by organic acid generated by microbes and their biofilms. The pits in the Martian minerals are partly filled with debris, possibly the clay-like remains of organic microbes.

Lizenz:

Public domain

Credit:

http://www.nasa.gov/centers/johnson/home/mars_meteorite.html

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