Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the ...

Astronomers have long speculated about the existence of a mysterious planet lurking far beyond Neptune, a world several times ...

Researchers use the Subaru Telescope in Hawaii to find a small object on the outer edge of the Solar System. Nicknamed ...

The Solar System is a vast and mysterious realm, filled with planets, moons, asteroids, and icy bodies waiting to be ...

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

Ammonite was discovered using the Subaru Telescope in Hawaii, with follow-up confirmation from the Canada-France-Hawaii ...

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

In the remote outer reaches of planetary systems, far beyond the orbit of known planets, enormous and mysterious worlds silently loop around their stars. Some drift as far as 10,000 times the ...

An icy object in perfect sync with Neptune reveals new details about planetary migration and unseen bodies far beyond the Kuiper Belt.

Astronomers have discovered a bizarre object in the outer solar system, 2020 VN40, that dances to Neptune’s gravitational beat in a never-before-seen rhythm. It’s the first of its kind, orbiting the ...