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Chasma Boreale, Mars

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dc.contributor.author NASA
dc.contributor.author JPL-Caltech
dc.contributor.author ASU
dc.date.accessioned 2011-03-17T16:21:12Z
dc.date.available 2011-03-17T16:21:12Z
dc.date.issued 2011-03-17
dc.identifier.uri http://www.nasa.gov/multimedia/imagegallery/image_feature_1894.html
dc.identifier.uri http://hdl.handle.net/123456789/7633
dc.description.abstract Chasma Boreale, a long, flat-floored valley, cuts deep into Mars' north polar icecap. Its walls rise about 4,600 feet, or 1,400 meters, above the floor. Where the edge of the ice cap has retreated, sheets of sand are emerging that accumulated during earlier ice-free climatic cycles. Winds blowing off the ice have pushed loose sand into dunes and driven them down-canyon in a westward direction. This scene combines images taken during the period from December 2002 to February 2005 by the Thermal Emission Imaging System instrument on NASA's Mars Odyssey was part of a special series of images marking the orbiter as the longest-working Mars spacecraft in history. en_US
dc.title Chasma Boreale, Mars en_US
dc.type Image en_US

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