A 9th planet in our solar has been hypothesized for a while now. New evidence suggests that a so called "Planet X" exists, based on an orbital cluster of six solar system objects. The planet's gravity is likely influencing the orbit of these objects. Although the planet has not yet been imaged by telescopes, some scientists predict that they will find it within the next five years. Planet X is hypothesized to be about the size of Neptune and orbits the sun once every 15,000 years.