The newly discovered world — a "sednoid" — challenges what planetary scientists thought they knew about the edge of the solar ...

The celestial body's unusual orbit “implies that something extraordinary occurred" in the early days of the solar system—and ...

Astronomers have discovered a "fossil" world lying in the outskirts of the solar system, according to new research.

Typically, telescopes are synonymous with bringing far-off objects close, but the newest member of the solar system was discovered using wide-field imaging. The Subaru Telescope has spotted a distant ...

In 2003, NASA-funded researchers spotted what was then the most distant object discovered in our Solar System. The dwarf ...

A newly found icy object, Ammonite, may be a 4-billion-year-old fossil from the Solar System’s edge—and it’s casting doubt on ...

Every once in a while, space gives us something totally unexpected. Well this time, the solar system is surprising us with a ...

Researchers just got a step closer to understanding the origins of our solar system, with the discovery of an object orbiting ...

Astronomers have found 2023 KQ14, nicknamed Ammonite, a rare sednoid with a unique orbit that challenges the Planet Nine ...

Despite the powerful telescopes that modern astronomers have to work with, the distant reaches of the Solar System are still ...

Astronomers have discovered a new world circling the outer edges of our solar system. So far, there are only four known ...