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

Explore the fascinating motion of our Solar System as it journeys not just around the Sun, but also through the vastness of the Milky Way galaxy and the Universe beyond. This in-depth video unpacks ...

A team of astronomers discovered a strange object in the outer solar system that is in a resonant orbit with Neptune.

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

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

Theories about Planet Nine have been swirling for years, but this newly discovery planet might put those theories to bed for good.

"We believe that continuing such activities will further expand our horizon in the field of planetary science." ...

A huge object, possibly as big as Manhattan, has entered our Solar System and it might be more than just a rock. Some scientists now say it could ...

In a surprising cosmic revelation, Uranus is found to be engaged in a unique orbital dance with a Centaur named 2015 OU₁₉₄.

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