For the longest time, the Solar System was known to have nine planets. Eventually, Pluto got downgraded to a dwarf planet due to the discovery of various other celestial bodies found in the Solar System that were of similar size. Now, astronomers discovered a dwarf planet -- dubbed 2012 VP113 and just 279.6 miles wide -- orbiting the Sun. However, astronomers noticed that something seems out-of-place regarding its orbit, and speculate that the incongruence could originate from a massive body influencing VP113's orbit -- a super-Earth.