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Flying By A Small, Hyperactive Comet

Fri, 11/12/2010 - 9:35am

When it comes to comets, gassy is good, or at least informative, says astronomer Michael A'Hearn. NASA's Deep Impact probe has been snapping pictures of Hartley 2 -- a small comet that is spewing a lot of gas and dust for its size. What do researchers hope to learn from the comet?

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