(Space.com) Since the 2006 reclassification of Pluto by the International Astronomical Union, our solar system has to make do with “only” eight planets. This situation, however, may soon change.
For over a decade, astrophysicists John Matese and Daniel Whitmire from the University of Louisiana have suggested the possibility of another planet. The two hypothesized that the odd orbital paths of some comets could be explained by the gravitational field of a ninth planet—approximately four times the size of Jupiter—in the so called Oort Cloud, which marks the boundary of our solar system about one light year from the sun. The two scientists call this, so far fictional, planet Tyche, named after the Greek god of luck.
Very exciting right? Well, not everyone thinks so…