Researchers at the California Institute of Technology have found evidence of a possible ninth planet ‘far out’ in our solar system.

It “has a mass about 10 times that of Earth and orbits about 20 times farther from the sun” than Neptune. That means “it would take this new planet between 10,000 and 20,000 years to make just one full orbit around the sun,” according to Caltech.

They haven’t actually seen this planet, however. What they have seen is that objects in the Kuiper Belt, the area of debris past Neptune, had orbits that strangely pointed toward the same place. They calculated that a planet was exerting the necessary gravitational pull to make that happen.

Many telescopes have a chance at spotting this planet, even with its “bizarre, highly elongated orbit.”

Caltech has a lot of confidence in this planet, nicknamed ‘Planet Nine’. They think it will easily rule out any doubt on whether it’s a true planet, unlike Pluto, which was kicked out in 2006.

Mike Brown, who played a role in Pluto’s demotion to a dwarf planet, says “all those people who are mad that Pluto is no longer a planet can be thrilled to know that there is a real planet out there still to be found. Now we can go and find this planet and make the solar system have nine planets once again.”