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Vestas Polar Regions
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Vesta's Polar Regions

November 6, 2012
January 25, 2012 - PASADENA, Calif. -- New modeling shows that, under present conditions, Vesta's polar regions are cold enough (less than about 145 kelvins) to sustain water ice for billions of years, as this map of average surface temperature around the asteroid's south pole indicates. (The white dashed line marks Vesta's south polar circle.) Figure reprinted from the paper in Icarus by T.J. Stubbs, T.J. and Y. Wang. For more information about the Dawn mission, visit: http://www.nasa.gov/dawn. Image credit: NASA/GSFC/UMBC