NASA spacecraft detects changes in Martian sand dunes

NASA's Mars Reconnaissance Orbiter has revealed that movement in sand dune fields on the Red Planet occurs on a surprisingly large scale, about the same as in dune fields on Earth. This is unexpected because Mars has a much thinner atmosphere than Earth, is only about one percent as dense, and its high-speed winds are less frequent and weaker than Earth's....

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Published By: ScienceDaily Tech - Wednesday, 9 May, 2012

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