Priority Target for the James Webb Space Telescope? The Hypothetical Planet 9

One of the most anticipated pieces of space hardware will be looking for one of the solar system's biggest mysteries.

June 1, 2016

An Alien in Our Solar System: Planet 9 Might Have Once Belonged to Another Star

The first alien world we visit may actually be in our own solar system.

June 1, 2016

The Case for Planet Nine Just Got a Whole Lot Stronger

Astronomers just discovered new evidence of a 9th planet in our solar system.

March 29, 2016

Scientists Find Evidence of a 9th Planet Lurking at the Edge of Our Solar System

Astronomers set out to prove that Planet Nine does not exist. As it turns out, they may have done the exact opposite.

January 21, 2016
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