Concept
Version 5
Created by Boundless
Martian Biosignatures
Martian Meteorite with Possible Fossilized Bacteria
Some researchers suggest that these microscopic structures on the Martian meteorite could be fossilized bacteria.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"ALH84001 structures."
http://en.wikipedia.org/wiki/File:ALH84001_structures.jpg
Wikipedia
Public domain.