If confirmed, the rock would become just the second world past Neptune in our solar system to host an atmosphere.

Add Yahoo as a preferred source to see more of our stories on Google. Just because Pluto was ruled out as a planet in 2006 doesn’t mean our solar system only has eight planets. The search for Planet ...

In the paper from 2024, the team looked at long-period objects that crossed the path of Neptune's orbit, finding that their ...

While searching for the mysterious Planet X that some astronomers believe lurks on the edge of our solar system, researchers instead found an extremely distant object they dubbed "the Goblin." And ...