The quartet of planets — named b, c, d and e — are some of the smallest rocky worlds ever detected. NASA says each has a mass ...

Scientists have discovered four new Earth-like rocky planets orbiting Barnard's Star, just six light-years away. Using ...

Yet despite the drumbeat of evidence, we still know of just one planet in the cosmos with life — the one you’re standing on.

The discovery of salty mineral evaporites on Ryugu indicates that watery environments may have been widespread in the early ...

A new study challenges traditional models of how planets form. A new analysis of existing data suggests that exoplanets with masses comparable to Jupiter may have formed significantly earlier than ...

Scientists are using an array of instruments to detect other planets, some of which may harbor life—and others that most ...