A new NASA map adds further evidence that an ancient ocean once covered up to one third of Mars' surface, with extensive valley networks that imply heavy rainfall that would feed such a large body of water.
Tuesday, November 24, 2009
Ancient Ocean on Mars
A new NASA map adds further evidence that an ancient ocean once covered up to one third of Mars' surface, with extensive valley networks that imply heavy rainfall that would feed such a large body of water.
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