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

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 ...

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

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

The other object is 2014 NX 65, which is definitely not resonant with Uranus but might have an inner 3:2 resonance with ...

SCOTS may be able to catch a glimpse of Pluto this week as it reaches peak brightness. The dwarf planet is set to be at its ...

The long-serving space telescope saw the third interloper to enter the solar system from beyond its limits late on Monday ...

According to study co-author Dr Fumi Yoshida, Neptune is the only known massive object near the outer Solar System that could have shaped the orbits of the TNOs and Sednoids. However, Ammonite is ...

Astronomers have made an extraordinary discovery at the outer edge of our solar system—a strange space rock that dances in ...

In the dark, icy outskirts of our solar system—far beyond Neptune's orbit—astronomers have discovered a cosmic oddball that ...