Now, a team of astronomers who originally sought to kill the notion that there is a ninth planet orbiting our sun has accomplished just the opposite.

They have what they consider to be the strongest evidence yet for the farthest planet from our sun, informally called Phattie, but commonly known as Planet Nine.

Planet Nine was first proposed in 2014, and it has been the job of Konstantin Batygin and Michael Brown — both scientists in the Division of Geological and Planetary Science at the California Institute of Technology — to essentially debunk it.

"Our main goal at that point was to show that this idea is crazy," Brown told Nature News. Now, over a year later, Brown and Batygin are reporting the exact opposite — that a planet much larger than Earth is orbiting our sun 18.6 billion miles away. They reported their findings in a paper, which has been accepted for publication in The Astronomical Journal.