Planets beyond Neptune

The furore surrounding the solar system's theoretical 'Planet 9' reached new heights after a University of Michigan researcher discovered evidence that may shed light on the existence of the elusive world beyond Neptune.

NASA now says there is growing evidence for the existence of the mysterious Planet Nine, also known as Planet X and often associated with the doomsday planet Nibiru.
Planet Nine seems to be out there, lurking invisible in the darkest outskirts of the solar system, according to a recent press release by NASA.

Astronomers have noticed that some distant objects far beyond Pluto are behaving oddly and are speculating as to whether there may be a huge ninth planet ten times larger than earth at the edge of our solar system. Nicknamed Planet Nine, the structure has an extremely elongated orbit that takes from 10,000 to 20,000 years to swing once around the sun.