America in Transition Pages

Monday, December 21, 2015

Dry ice, not water, responsible for many gullies on Mars, study says

Gullies on Mars that appeared to have possibly been carved by water were probably dug out by great chunks of dry ice, a pair of French researchers say.

Even as certain lines of evidence mount for the very occasional occurrence of water on present-day Mars, the findings published by the journal...



from L.A. Times - Science http://ift.tt/1QUMFnw
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