A recently discovered celestial body is rewriting our knowledge of the Kuiper Belt and maybe challenging the existence of the ...

There’s a new frozen oddball orbiting the Sun, and it’s not your average space rock. It’s a planet—a minor one, to be ...

Here are some of the most amazing discoveries that New Horizons and previous Earth-based observations have produced of Pluto. Being so cold, Pluto boasts different kinds of ices that planets ...

Astronomers have discovered a mysterious dwarf planet, 2017 OF201, far beyond Pluto. This discovery challenges existing ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.

Scientists have discovered a mysterious new object far beyond Neptune, and it could be one of the most distant dwarf planets ...

Lon Tweeten for TIME None of the new discoveries about Pluto would have been made, of course, had the little world not been spotted in the first place—an achievement that took sublime attention ...

Explore the universe with news on fascinating discoveries ... is about half the size of the dwarf planet. Now, new research suggests that Pluto and Charon briefly came together billions of ...

New Horizons flew by Pluto very quickly ... The mission also provided the public with stunning images and exciting discoveries. If you’re one of the over 4 Million Americans set to retire ...

The team, from Dyal Singh Public School in Karnal, northern India, was participating in an initiative known as the International Astronomical Search Collaboration when it made the discoveries ...