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An excellent question. At the moment, we don't know if anything lives on Mars. It seems likely that something might have, once upon a VERY long time ago, but the evidence is fragmentary. Actually, it's worse than that. There's nothing.

There is nothing in the soil that the Viking probe was able to analyze, but the polar orbiters seem to have discovered an anomalous trace of methane in the Martian atmosphere, and we're not yet sure what might create methane other than some sort of biological process. Of course, Mars is really close to another planet that is full of life, so it's hard to be sure about these things.

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14y ago

What else can I help you with?