File:Chasma Boreale, Mars.jpg
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![File:Chasma Boreale, Mars.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/d/de/Chasma_Boreale%2C_Mars.jpg/800px-Chasma_Boreale%2C_Mars.jpg?20110316150841)
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[edit]DescriptionChasma Boreale, Mars.jpg |
English: Chasma Boreale, a long, flat-floored valley, cuts deep into Mars' north polar icecap. Its walls rise about 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. |
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Source | NASA Image of the Day |
Author | NASA/JPL-Caltech/ASU |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ![]() |
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current | 15:08, 16 March 2011 | ![]() | 4,000 × 2,000 (639 KB) | Originalwana (talk | contribs) | {{Information |Description ={{en|1=Chasma Boreale, a long, flat-floored valley, cuts deep into Mars' north polar icecap. Its walls rise about 1,400 meters, above the floor. Where the edge of the ice cap has retreated, sheets of sand are emergin |
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15 March 2011
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