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Ceres may be an asteroid impersonator

The largest member of the asteroid belt could have emigrated from the solar system’s fringe

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5:39pm, July 15, 2008

If planetary scientist Bill McKinnon’s hunch is right, the largest asteroid in the solar system isn’t an asteroid at all. Ceres, as the 470-kilometer-wide object is called, may be a relative of Pluto that formed at the solar system’s fringes but came in from the cold several billion years ago.

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