A stronomers have discovered an incredibly rare non-planetary body lurking on the outer reaches of the Solar System, which ...

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

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

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