Our obsessive search for a ninth planet in our solar system — one that can fill the void left by Pluto's demotion back in 2005 — is finally paying off. In a new study accepted for publication in the Astronomical Journal, two astronomers — the Scott Sheppard from the Carnegie Institution for Science and Chadwick Trujillo from Northern Arizona University — have detailed their observations of several trans-Neptunian objects lying in the fringes of the solar system. The location and orbits of these objects makes the existence of a ninth "Planet X" all the more likely, the researchers say. "If you want to put a number on it, I'd be somewhere like 80 percent sure that there's a Planet X out there," Sheppard told Space.com. "I don't think it's a slam dunk; it's not 100 percent, because it's such low-number statistics. But there are a lot of strange things that seem to be going on that would be explained quite well with there being some kind of massive planet out there." The clustering of the