An asteroid may share our annual trajectory around the Sun. This recent discovery raises questions about the complexity of ...

An international team of researchers has just revealed the existence of three Earth-sized planets in the binary stellar ...

Astronomers have found signs that the small icy world Chiron, orbiting between Saturn and Uranus, may be forming a new ring ...

The newly discovered world is called GJ 251c and it is a super-Earth orbiting a red dwarf star less than 20 light-years away.

Quasi-moons are not real moons and don't actually orbit the Earth, although they sometimes appear to do so for short periods ...