10:01:09 Earth,Venus Mars

10:01:09 Earth,Venus Mars - Earth,VenusandMars VenusandMars

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Earth, Venus and Mars 01/10/2009 07:28:00 Venus and Mars Venus and Mare “siblings” of the Earth Earth, Venus, and Mars all started out similarly. Comparing them provides  important clues to how each evolved. Key interactions between heating, cooling, and chemical composition. Venus Venus is geologically active (consistent with its size with Earth)  Surface Pressure: 92 times that of Earth Surface Temp: 482 C Atmosphere is 96% CO 2   Why so hot – too close to the Sun to have liquid oceans No water to dissolve CO 2  gas means it is all in the atmosphere All the CO 2  in the atmosphere makes it even hotter, boiling off any liquid  water even more. It is all gone now. The Greenhouse Effect CO  and other greenhouse gasses allow visible and UV light in, but block  infrared (heat) radiation.  Warms up planet like a greenhouse
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10:01:09 Earth,Venus Mars - Earth,VenusandMars VenusandMars

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