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“I’m back!” Comet ISON hangs on in there

\ When ISON failed to reappear after its close encounter with the Sun on Thanksgiving, NASA scientists thought it had disintegrated completely. Passing less than a million miles above the surface of the Sun would have exposed the comet to temperatures over 2,000 Celsius. However, a bright streak observed by the Solar and Heliospheric Observatory […]

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