Return to Human Space Flight home page


high res (0.4 M) low res (169 K)
1075 --- These are possible Martian fossilized microbial cells attached to a mineral in the Egyptian meteorite Nakhla. They range from about 1 to 2 micrometers in size and each one is firmly attached to the crystal by clay minerals which are known to commonly form on cells as part of the mineralization or fossilization process. The scale bar is 5 micrometers or about 1/10 the thickness of a human hair.

Curator: Kim Dismukes | Responsible NASA Official: John Ira Petty | Updated: 04/09/2002
Web Accessibility and Policy Notices