These thoroughly creepy sand dunes on Mars were photographed by the HiRISE camera on the Mars Reconnaissance Orbiter. Martian sand dunes are unevenly covered with carbon dioxide frost, creating patterns of light and dark, but why these particular dunes, in the Kunowsky crater, have stripes is a mystery.
Image Credit: HiRISE, MRO, LPL (U. Arizona), NASA; Processing: Włodek Głażewski
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