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 ...

Jupiter’s striking size, swirling gases, and dramatic bands in its atmosphere set it apart from every other planet. One of ...

Astronomers had observed auroras on all other planets in the Solar System, and spotting one in Neptune completes the list.

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