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Carbon Rocks Underground May Record Mars' Watery Past
Original: Carbon Rocks Deep Underground Could Hold the Evidence of Mars' Watery Past.
Carbon-rich rocks deep beneath the Martian surface could preserve evidence that liquid water once flowed on Mars, according to a report by Universe Today. Such carbonate formations form when water interacts with rock, so finding them buried underground would point to a warmer, wetter era in the planet's history and offer targets for future exploration.
Why now: New attention on where to look for traces of ancient water and possible life on Mars
Evidence
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