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

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.

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

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

Astronomers have hoped for the existence of Planet Nine for years. Things were looking promising, but this discovery might ...

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

While astronomers have long searched for a mysterious ninth planet lurking beyond Pluto, a recent discovery is turning that ...

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

Astronomers discover Ammonite, a rare icy object beyond Pluto, challenging Planet Nine theory and offering clues to the solar ...

For reference, Pluto’s average distance from the Sun is about 40 AU, so 2023 KQ14 is quite distant. At 23.4 billion miles (37 ...