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Does Mars have liquid water?


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Answered 2011-12-02 00:45:53

No, it does not. For a planet to have liquid water, it must be the perfect distance from the sun, not so close that it boils away, and not so far that it freezes.
There is no liquid water on Mars, it is generally far too cold and the atmospheric pressure is too low. While there are certain places (near the equator) on Mars that occasionally reach temperatures high enough for liquid water to exist, the atmospheric pressure is so low that any ice on the ground surface would change directly from ice into vapor, which is called sublimation.

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