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How I Killed Pluto and Why It Had It Coming

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Published on Feb 21, 2013

January 19, 2011
Dr. Michael Brown (Caltech)

Dr. Brown, who has found many of the worlds at the edge of our solar system, shares the inside story of how he discovered "other Plutos" out there beyond Neptune. Among these was Eris, which is now known to be about the same size as Pluto. He named that new world for the goddess of discord, because, as he describes with his characteristic humor, its discovery resulted in a private and public controversy that led to a redefinition of what a planet is.

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