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Joined: 11 May 2006
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 Posted: Sat Aug 31, 2013 8:00 am Post subject: Space Photo of the Day: Frosted Martian Impact Crater |
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This image from the Mars HiRISE mission was planned to search for gully activity in the Northern Hemisphere. Changing gullies have so far been documented only in the Southern Hemisphere, where a greater thickness of carbon dioxide frost forms in the winter.
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Source: Wired Top Stories
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