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 ...

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 ...

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

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

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 ...

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

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

Learn more about a sednoid called Ammonite that has been detected in the outer reaches of the Solar System.

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

A rare celestial object beyond Neptune, 2020 VN40, moves in sync with Neptune, offering new insights into the outer solar system and fueling the search for Planet Nin ...