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Does Planet Nine exist? The new evidence says yes.
Recent papers by Michael Brown and Konstantin Batygin, both astronomers at Caltech, are providing a whole new line of evidence in support of the existence of our solar system's hypothesized Planet ...
SlashGear2y
Why NASA Thinks a Hidden Ninth Planet Might Be Possible
The idea regarding the possible existence of a ninth planet, called Planet Nine/Planet X, in the solar system started with Caltech professors Mike Brown and Konstantin Batygin looking far out ...