Maybe, there's a theory that the 9th planet is a black hole, and that's why it's very hard to detect outside of the gravitational effects. Amusingly there's a

Maybe, there's a theory that the 9th planet is a black hole, and that's why it's very hard to detect outside of the gravitational effects. Amusingly there's a diagram in the paper that's a 1:1 diagram (life size) in the paper. Would be crazy if true, we could verify all kinds of things by tinkering with a live black hole.