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Tank
Joined: 09 Dec 2005
Posts: 1294
Location: Glesgae
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 Posted: Sat Nov 07, 2009 10:36 pm Post subject: Fake Mars pics |
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| The evil ones have posted faked images of Mars. Don't fool me for a minute. |
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necronomicon
Joined: 09 Dec 2005
Posts: 6007
Location: Wallia
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| Posted: Sun Nov 08, 2009 7:13 am Post subject: |
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Me neither!  Fascinates me how dust devils form with no atmosphere/atmospheric pressure (is it 4 or 6 millibars?) -
| Quote: | | Although the temperature on Mars can reach above nbk (0 °C), liquid water is unstable as the atmospheric pressure is below water's triple point and water ice simply sublimes into water vapor. An exception to this is in the Hellas Planitia impact crater, the largest such crater on Mars. It is so deep that the atmospheric pressure at the bottom reaches 1155 Pa, which is above the triple point, so if the temperature exceeded 0 °C liquid water could exist there. |
Actually, if you research the pressure in millibars results vary from about 1 to 100.
http://www.wolframalpha.com/input/?i=atmospheric+pressure+mars+millibar
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