Is there a 9th planet at the outermost edge of the solar system? New strong evidence seems to finally confirm theories about the existence of another large planet beyond Neptune's orbit. Not only would this planet be a scientific sensation, Planet 9 could also be linked to myths and prophecies of our ancestors who knew of its periodic appearance. Planet 9 probably orbits the sun in such an unusual orbit that it only enters the inner reaches of the solar system, and thus the range of our telescopes, every few thousand years. If we are to believe the Sumerian legends, then something monstrous could happen!