Astronomers have spotted a "rogue planet" - wandering the cosmos without a star to orbit - 100 light-years away. (via BBC News; image via ESO)

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Theoretical Planet 9 may be a rogue planet not native to our solar system By Joel Hruska 1/12/17

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A huge alien world orbits 600 billion miles (1 trillion kilometers) from its host star, making its planetary system the most widely separated one known, a new study reports.

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Rogue planet - Wikipedia, the free encyclopedia

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Astronomers from Carnegie and the University of Western Ontario have detected the youngest free-floating planet found to date, and it's only 95 light-years away.

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Artist's conception of a Jupiter-size rogue planet.

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