The Hunt for Super Pluto Comes Up Empty—For Now

March 10, 2014 3:25 PM

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An exhaustive sky survey reveals no sign of a fabled Planet X, but plenty of other cool discoveries

Back in 2011, a couple of astronomers presented circumstantial evidence of a giant, undiscovered planet they named Tyche, for the Greek goddess of good fortune, lurking at the outer edges of the Solar System. This faraway world would be at least as big as Jupiter, but hundreds of times more distant ...

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