The celestial body's unusual orbit “implies that something extraordinary occurred" in the early days of the solar system—and ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An artist's interpretation of a trans-Neptunian object. | Credit: Artwork: NASA, ESA, and G ...

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

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

Beyond Neptune, a celestial object puzzles astronomers with its synchronized motion with the giant planet. Its inclined orbit ...

In a groundbreaking discoverypublished in The Planetary Science Journal, a team of astronomers led by the Center for Astrophysics | Harvard & Smithsonian has confirmed the existence of a rare object ...

According to study co-author Dr Fumi Yoshida, Neptune is the only known massive object near the outer Solar System that could ...

A new study from researchers at the Southwest Research Institute has unearthed a fascinating discovery about Arrokoth, a trans-Neptunian object made famous by the New Horizons probe in 2020.

The trans-Neptunian region, extending beyond Neptune, represents a primordial reservoir of icy and rocky bodies that have remained relatively unchanged since the Solar System’s formation ...

Press Release WHT and TNG Observations Prove that the Large Trans-Neptunian Object 2005 FY9 is Very Similar to Pluto by SpaceRef January 16, 2006 ...

“Stellar Occultation by the Resonant Trans-Neptunian Object (523764) 2014 WC510 Reveals a Close Binary TNO,” Rodrigo Leiva et al., 2020 Sep. 28, Planetary Science Journal [https://iopscience ...