Astronomers found new evidence that a giant ghost planet may lurk in our solar system

Astronomers found new evidence that a giant ghost planet may lurk in our solar system  Business Insider Yes, there might actually be a 'Planet Nine,' and the evidence is mounting  BGR A Newly Discovered Solar System Object Hints at Hidden Planet Nine  Popular Mechanics A New World's Extraordinary Orbit Points to Planet Nine  Quanta MagazineFull coverage

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