"The possibility of a new planet is certainly an exciting one for me as a planetary scientist and for all of us," said Jim Green, director of NASA's Planetary Science Division. "This is not, however, the detection or discovery of a new planet. It's too early to say with certainty there's a so-called Planet X. What we're seeing is an early prediction based on modeling from limited observations. It's the start of a process that could lead to an exciting result."
Planet X or nine is a hypothetical planet which could orbit the planet sun in the outer realms of our Solar System, this would explain the unusual orbits of some smaller bodies in the Kuiper Belt. If theories are correct in saying that Planet X is in the outer realms of our Solar System, that would mean a year on it would take approximately 20,000 years!
If X was a planet, how would you react?