Martian sand dunes, satellite image

Martian sand dunes, satellite image

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This image is part of the feature Mars As Art

Credit: NASA/JPL/UNIVERSITY OF ARIZONA/SCIENCE PHOTO LIBRARY

Caption: Martian sand dunes. Martian sand dunes. Coloured satellite image of north polar sand dunes blown into crescent shapes by the wind. The surface is covered by carbon dioxide frost (light brown) except the darker areas where the carbon dioxide has sublimated (turned from solid directly to gas) and exposed the basaltic sand beneath. Image obtained by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter (MRO) on 24th August 2009. The width of this image is roughly one kilometre across.

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Keywords: 2009, 21st century, aeolian geology, arid, crescent, deposition, dome, dunes, erosion, from space, geographical, geography, geological, geology, high resolution imaging, hirise, hirise camera, mars, mars reconnaissance orbiter, martian, mro, nasa, planetary science, planetary surface, sand dune, sand dunes, satellite image, solar system, space mission, surface, volcanic rock, volcanic rocks, wind blown, wind-blown, windblown

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