Martian north polar terrain

Martian north polar terrain

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This image is part of the feature Mars As Art


Caption: Martian north polar terrain. Coloured satellite image of
ice-covered sand dunes in the north polar region of Mars. Wind action has created crescent-shaped dunes (right half of image). The dark circular patches on the left are areas where frozen carbon dioxide has sublimated (turned from solid direct to gas) to reveal the darker basaltic sand underneath. Image obtained by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter (MRO) on 9th February 2008. The width of this image is roughly 1.3 kilometres across.

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Keywords: 2008, 21st century, carbon dioxide, crescent, crescent-shaped, dry ice, dune, dunes, eroded, eroding, erosion, from space, frost, frozen, geographical, geography, geological, geology, high resolution imaging, hirise, hirise camera, ice, layered, layers, mars, mars reconnaissance orbiter, martian, mineral deposits, minerals, mro, nasa, north polar region, north pole, northern, planetary, planetary science, planetary surface, polar, sand, sand dune, sand dunes, satellite image, solar system, space mission, sublimates, sublimating, surface, terrain, vaporisation, vaporise, vaporize, volcanic rock, volcanic rocks

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