Electron micrograph of Martian microfossil

This image is part of the feature Back To Mars

Credit: NASA/SCIENCE PHOTO LIBRARY

Caption: Evidence for life on Mars. Scanning electron micrograph of a tube-like structure on a meteorite which originated from Mars. Structures such as this have been interpreted as possibly being microfossils of primitive, bacteria-like organisms which may have lived on Mars more than 3.6 billion years ago. The structures are less than 1/100th the diameter of a human hair. The meteorite, called ALH84001, was discovered in Antarctica in 1984, and has since been studied at NASA's Johnson Space Center and at Stanford University.

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Keywords: alien research, astrobiology, biology, exobiology, extraterrestrial, extraterrestrial life, fossil, life, life on mars, mars, martian, martian microfossil, meteorite, microfossil

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