Astronomers at Cal Tech have announced today that they have found new evidence of a giant icy planet in our solar system which is far beyond the orbit of Pluto. They are calling it "Planet Nine." Their study, published in the Astronomical Journal, describes the planet as about five to 10 times as massive as the Earth.

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As reported in the Washington Post on Wednesday, January 20, 2016.

Journal Link: Astromical Journal