Join Donate

Share Your Story • Xakarus Alldredge • March 21, 2016

Planet IX

Planet IX

Artist impression of the hypothetical ninth planet of the Solar system. Proposed by famed planet-hunter Mike Brown and Konstantin Batygin, this hypothetical planet could lie in the far reaches of the Solar system, flinging dwarf planets like 90377 Sedna into oddly eccentric orbits.

Comments & Sharing
Bill Nye and people
Let's Change the World

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Today

LightSail
LightSail 2 Sweepstakes

Help power LightSail 2's journey and support the mission by entering to win a complete LightSail swag kit.

Learn More

You are here: