The Milky Way galaxy might once more have a ninth planet. No, Pluto still isn’t back. Instead, the new planetary candidate takes the form of a mysterious, yet-to-be spotted planet hiding deep in the outer reaches of the solar system.
Despite its elusive nature, here’s what we do know about the possible planet.
Where did this all begin?
The story actually starts with another celestial object: 2015 BP519, as described in a paper published on arXiv. The team of researchers notes that the object, classified as an “Extreme Trans-Neptunian Object” due to its size and distance from the Sun, has been on the team’s radar since 2014.
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