Life
Did Mars hide life in its watery pockets?
Clays and carbonates found in a Martian crater might be deposits from groundwater that could have nourished life long after the planet's surface dried up
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Clays and carbonates found in a Martian crater might be deposits from groundwater that could have nourished life long after the planet's surface dried up
NASA's Curiosity rover has found an unusually high proportion of heavy hydrogen in the Martian soil that may help pin down how Mars lost its atmosphere