A Ninth Planet Could Be Tilting Our Solar System
Researchers say our solar system might be hiding a distant planet that has a mass 10 times greater than Earth's.By Ryan Biek | October 20, 2016
Our solar system may have a ninth planet so far away, we haven't seen it yet. But we think we can see how it might have shifted our known planets.
If Planet Nine exists, it's likely located beyond Neptune and has an icy surface.
Researchers at the California Institute of Technology believe its mass is roughly 10 times more than Earth's and think it could be 93 billion miles from the sun.