Martian sand dunes, satellite image

Martian sand dunes, satellite image

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This image is part of the feature Mars As Art


Caption: Martian sand dunes. Coloured satellite image of sand dunes in the north polar region of Mars. The sand has been blown into crescent and dome shapes by the wind. Dark-coloured patches are areas where the surface layer of carbon dioxide frost has sublimated (turning from sold directly to gas) and exposed the basaltic layer beneath. Image obtained by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter (MRO) on 30th January 2008. The width of this image is roughly 1.2 kilometres across.

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Keywords: 2008, 21st century, aeolian geology, arid, basalt, basaltic, crescent, deposition, dome, dunes, erosion, exposed, exposure, from space, geographical, geography, geological, geology, high resolution imaging, hirise, hirise camera, mars, mars reconnaissance orbiter, martian, martian poles, mro, nasa, north polar, planetary science, planetary surface, polar, sand dune, sand dunes, satellite image, solar system, space mission, sublimates, sublimating, sublimation, sublime, surface, thawing, vaporisation, vaporise, vaporize, volcanic rock, volcanic rocks, wind blown, windblown

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