Weird Asteroid has Identity Crisis, Grows a Tail

November 11, 2014 9:07 PM

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Astronomers have discovered that a well-known asteroid has a bit of an identity crisis.

Usually, it’s easy to differentiate between a comet and an asteroid. Composed of rock and ice, comets can become heated by the sun’s heat as they approach, causing ices to sublimate, blasting vapor and dust into space. This creates a coma (an atmosphere-like layer) around the nucleus and a long tail...

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