David Williams
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 Posted: Mon Apr 14, 2008 6:52 am Post subject: Newest Phobos Images from Mars Orbit |
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-> I don't know about anyone else, but to the naked eye, the reflectivity
-> on Phobos sure looks like a large percentage of that moon could be
-> water ice.
Phobos is at about the same temperature as Mars, i.e. not too far below
the freezing point of water, and maybe sneaking above it sometimes. It
has no atmosphere. So if there were water-ice directly on the surface,
it would quickly sublime away, leaving a coating of whatever dust,
etc., was embedded in it.
dow |
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