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

Would one frozen world, just visible on the rim of the Sun’s kingdom, turn decades of speculation on the concealed layout of ...

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

A newly found icy object, Ammonite, may be a 4-billion-year-old fossil from the Solar System’s edge—and it’s casting doubt on ...

Typically, telescopes are synonymous with bringing far-off objects close, but the newest member of the solar system was ...

KQ14, nicknamed "Ammonite", was discovered using the Subaru Telescope and is a highly elliptical object with a perihelion and ...

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 discovered a "fossil" world lying in the outskirts of the solar system, according to new research.

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

The Subaru Telescope has revealed a fourth member of the sednoids, a group of small bodies with peculiar orbits around the ...

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 ...