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ghrayfahx t1_it845yr wrote

Reply to comment by IDownvoteUrPet in As many as a fifth of all asteroids in the asteroid belt may have been formed out on the fringes of the solar system. Findings suggest that both Ryugu and the CI chondrites originate from the same region of space, and could even have shared the same parent body. by marketrent

Technically there are several Planet X candidates out there. Including Pluto I know of 5 “dwarf planets”, although I believe I heard recently that they discovered a 6th a while back.

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thejoeymonster t1_itn9v8t wrote

I've always thought of Planet X as a larger planet out past the TNOs, not Pluto and other dwarf planets.

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