Tyche

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New Planet Sought at Edge of Solar System

Planet Tyche explains change in path of comets: researchers

(Newser) - A huge and previously undetected planet lies at the outer edge of the solar system, believe two University of Louisiana astrophysicists. The planet Tyche, a gas giant four times the size of Jupiter, likely lies in the outer Oort cloud—the most remote part of the solar system—and almost...

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