To Planet 9 and Beyond

(Discover Blogs::Out There) – Corey S. Powell:

Mike Brown, an astronomer at Caltech, has been one of the most aggressive scientific explorers of the dark, outer boundaries of the solar system. His campaign to extend human vision into the poorly understood region beyond Neptune led to the discovery of a whole menagerie of large object including Pluto’s near-twin, Eris. …

outthere 2016/04/30 beyond

Orbits with Planet 9

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