Is There a Rogue Planet Lurking Far Out in the Solar System? (Video.)

The state of the universe.
March 31 2014 3:14 PM

The Rogue Planet

What lies in the furthest reaches of the solar system?

Astronomers report in Nature that they’ve discovered a probable dwarf planet that orbits the sun further out than Pluto, which is notable in its own right. But it may point to something bigger: a rogue planet hiding in the icy furthest reaches of our solar system.

Paca Thomas is a regular video contributor to Slate.

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