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NASA probe indicates Vesta asteroid once had flowing water

Jan 26, 2015    

Washington: One of the largest asteroids in our solar system - Vesta - may once have had flowing water which formed gullies and other erosion features on its surface, according to data from NASA's Dawn spacecraft.Vesta, visited by Dawn from 2011 to 2013, was once thought to be completely dry, incapable of retaining water because of the low temperatures and pressures at its surface.However, a new study shows evidence that Vesta may have had short-lived flows of water-mobilised material on surface."Nobody expected to find evidence of water on Vesta. The surface is very cold and there is no ...

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