Early Mars couldn't hold liquid water long
Small craters point to a cold, dry past for the Red Planet
By Christopher Crockett, 17:15 PM April 11, 2014
Ancient Mars may have resembled Antarctica (but without penguins). The frozen Red Planet probably had liquid water on its surface for only relatively short times, according to a new analysis of craters on the surface. The finding that the Martian atmosphere was not dense enough to keep flowing water for more than a few hundred thousand years at a time adds to a growing pile of evidence that Mars probably remained cold and dry throughout most of its history, punctuated by brief periods of rela...
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