New images of Mars show sand dunes and ripples moving across the surface at dozens of locations, and shifting up to several metres, revealing that the planet's sandy surface is more dynamic than previously thought.
Source: http://www.cosmosmagazine.com/news/5002/mars-sand-dunes-caught-motion
Gretha Cavazzoni Gwen Stefani Halle Berry Hayden Panettiere Haylie Duff Heidi Klum Heidi Montag Hilarie Burton Hilary Duff Hilary Swank
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