Quote:
Originally posted by Slithy_Tove
Damn. That's fascinating. I would have thought the Martian atmosphere was too thin to support whirlwinds.
It also must mean that there must be considerable non-circular wind on Mars, because if there weren't, the planet would be covered with dust devil tracks, like the one in the picture. Something must be sweeping them away on a regular basis.
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Actually, I think that dark trail is a shadow from the dust devil, not a track left behind by it's movement (which shows just how tall it is)