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Encyclopedia: Mars (10142 words) |
 | [1] Jump to: navigation, search Carbon dioxide is an atmospheric gas composed of one carbon and two oxygen atoms. |
| Credit: NASA/JPL/Cornell [1] A transit of Phobos from Mars: Phobos is in transit across the Sun, as seen from Mars by Mars Rover Opportunity on March 10, 2004 at 07:36:38 UTC Earth time. |
| Also, present biologic activity is one of the explanations that have been suggested for the presence of traces of methane within the Martian atmosphere, but other explanations not involving life are generally considered more likely. |
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