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POPSA Solar Prominence Unfurls On September 29, this magnificent eruptive solar prominence lifted away from the Sun's surface, unfurling into space over the course of several hours. Suspended in twisted magnetic fields, the hot plasma structure is many times the size of planet Earth and was captured in this view by the Sun-watching STEREO (Ahead) spacecraft.
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POPSVery Short Movie: The Clouds of Mars There's a new Martian movie, though it's not quite feature-length. A series of still images taken by the Phoenix Mars Lander of water-ice clouds sailing overhead on the red planet has been turned into a short animation by NASA mission scientists. "The images were taken as part of a campaign to see clouds and track wind. These are clearly ice clouds," said Mark Lemmon of Texas A&M University and the lead scientist for the lander's surface stereo imager, which snapped the pictures of the clouds during a 10-minute period on Aug. 29.
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