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Planetary Science

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A bright arc, which is 1,200 kilometers long and 10 kilometers wide, at the edge of Saturn's rings suggests that the planet may be making a new moon. 

RETAINING WATER  Mars’ thin atmosphere, seen in a photograph taken by Viking 1, was denser in the past but not dense enough to keep surface temperatures above the freezing point of water for long times.

NEUTRINO CENTRAL  The IceCube Laboratory near the South Pole collects data from nearby underground sensors and picks out the detections most likely to have been triggered by neutrinos from deep space.

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