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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Credit: | Science Photo Library / NASA |
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