ODESSA, Texas — Recent observations of the farthest objects in our solar system have led scientists to believe there could be another planet beyond Neptune.
The evidence is based on observed orbital behavior of the outermost objects in the solar system.
It appears that there is an external body exerting gravitational force on Kuiper Belt objects, according to a study done by K. Batygin et al. in the Astronomical Journal.
The Kuiper Belt is a very distant body of frozen comets and debris similar to the Asteroid Belt, but located beyond Neptune.
The unexplained orbit paths of several Kuiper Belt objects leads scientists to believe that there's some other entity lurking beyond Pluto.
One of the more widely-held hypotheses is that it's another gas giant, similar to Neptune, but located 20 times farther from the sun.
And it doesn't have to be a planet either. It could be a black hole orbiting our sun, which would explain why we haven't been able to observe the body with telescopes.
It could also be dark matter; nobody knows for certain what it is but evidence suggest that something else is out there.