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 ...

KQ14, nicknamed "Ammonite", was discovered using the Subaru Telescope and is a highly elliptical object with a perihelion and ...

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

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 ...

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

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

Discovered through the Formation of the Outer Solar System: An Icy Legacy (FOSSIL) survey using the Subaru Telescope in ...

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

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