Artist depiction of Planet Nine | Tom Ruen/nagualdesign/ESO

Planet Nine May Be the Best Explanation for ‘Weirdness’ of Kuiper Belt Objects

The orbits and downward tilt of objects in the Kuiper Belt beyond Neptune might be best explained by the existence of Planet Nine, the hypothetical planet believed to be 10 times more massive than Earth.

Published On 10/17/2017
11:51 AM EDT