NASA spacecraft detects changes in Martian sand ...


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DatahopaForumHeavens AboveAstronomy & Near Earth PhenomenaNASA spacecraft detects changes in Martian sand dunes



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NASA spacecraft detects changes in Martian sand dunes

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Online Urania Topic starter
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NASA spacecraft detects changes in Martian sand dunes

NASA's Mars Reconnaissance Orbiter has revealed that movement in sand dune fields on the Red Planet occurs on a surprisingly large scale, about the same as in dune fields on Earth.  This is unexpected because Mars has a much thinner atmosphere than Earth, is only about one percent as dense, and its high-speed winds are less frequent and weaker than Earth's.
Source: NASA spacecraft detects changes in Martian sand dunes
Posted May 30, 2012, 12:23:02 PM Logged

Offline DaveMorton
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Comfort the Disturbed! Disturb the Comfortable!

Maybe the sand that the dunes are made from is not sand at all, but ground up packing peanuts? Tongue
Posted May 30, 2012, 13:52:28 PM Logged
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Offline Freddy
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Or maybe there are giant Martian worms burrowing around under there  Shocked
Posted May 30, 2012, 13:56:44 PM Logged

Offline DaveMorton
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Comfort the Disturbed! Disturb the Comfortable!

Somehow, I think that Shai-Hulud would require just a bit more oxygen in the atmosphere, and maybe even more atmosphere overall, than what is available on Mars. Cheesy
Posted May 30, 2012, 14:00:50 PM Logged
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Offline sybershot
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solar winds would be my guess  Grin
Posted May 31, 2012, 01:45:37 AM Logged
Astronomy & Near Earth Phenomena
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