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Re: Once Alien Life On Mars?

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Posted by Martin Richer on January 12, 2001 06:50:12 UTC

Mars can no longer support liquid water even if you could melt its polar icecaps. With various types of matter, solids may stand alone, and gases may stand alone, but liquids require the presence of solids and gases and cannot exist without them.
The solids provide the catching 'bowl' which gravity pulls the water into, and the weight of the cumulative atmosphere provides the pressure (what we call 'air pressure' on Earth) which prevents the liquid water from immediately turning back into a gas.
Mars has insufficient atmosphere to provide enough atmospheric pressure to allow liquid water.
Back to the drawing board. ;o)

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