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 ...

A newly discovered dwarf planet called 'Ammonite' (2023 KQ14) has been spotted in the outer solar system, and it could be ...

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.

Would one frozen world, just visible on the rim of the Sun’s kingdom, turn decades of speculation on the concealed layout of ...

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...

A team led by Wang Shiang-yu (王祥宇) and Chen Ying-tung (陳英同) of the Institute of Astronomy and Astrophysics at Academia Sinica ...

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

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

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

Typically, telescopes are synonymous with bringing far-off objects close, but the newest member of the solar system was ...