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There's a strange cloud on Mars right now!
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Original Message
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For more than a month now, a European orbiter circling Mars has been watching a long, plume-like cloud on the Red Planet.
The cloud has remained in place over a mountain called Arsia Mons near the Martian equator since Sept. 13, according to a statement released by the European Space Agency (ESA). But that location is just a coincidence, the agency adds. No volcanic process is producing the cloud — the volcano hasn't been active in about 50 million years, scientists believe.
In this version of a Mars Express image of the strange cloud, the European Space Agency has labeled nearby geologic features.
The same spacecraft, called Mars Express, and its predecessors have spotted similar clouds on at least three previous occasions, and those structures formed around the same time in the Martian year. And that's not a coincidence, the ESA wrote.
[link to www.space.com (secure)]
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