The sun lights the crests of sand dunes on Mars in this image from NASAs Mars Reconnaissance Orbiter obtained March The especially bright patches - bluish in enhanced color - are due to seasonal frost that is accumulating as Mars southern hemisphere appr

Tags: space, lights, crests, sand, dunes, mars, image, nasas, reconnaissance, orbiter, obtained, march, especially, bright, patches, bluish, enhanced, color, seasonal, frost, accumulating, southern, hemisphere, approaches, winter

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