Articles tagged "ninth planet"

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Planet Nine: Caltech researchers announce evidence of a giant new Solar System planet on a highly elongated orbit

Two Caltech researchers have announced today, January 20, 2016, they have found evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system. The object, which the researchers have nicknamed Planet Nine, has a mass about 10 times...

January 20, 2016