Martian Sand Dunes Re-Sculpted Regularly

Tempe AZ (SPX) Feb 04, 2011 The avalanche faces of huge Martian sand dunes, long thought to be frozen in time on the distant planet, are being re-sculpted on a seasonal basis, according to results of an investigation led by a Planetary Science Institute researcher. The vast northern dunes on Mars – covering an area larger than Texas at 845,000 square kilometers – were believed by planetary scientists to be fairly sta


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