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Last updated on April 16, 2014 at 6:35 EDT

Latest Marco Giuranna Stories

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2008-09-22 13:40:00

Scientists are now able to better explain why Mars's residual southern ice cap is misplaced, thanks to data from ESA's Mars Express spacecraft - the martian weather system is to blame. And so is the largest impact crater on Mars "“ even though it is nowhere near the south pole. Like Earth, Mars has frozen polar caps, but unlike Earth, these caps are made of carbon dioxide ice as well as water ice. During the southern hemisphere's summer, much of the ice cap sublimates, a process in...