Astronomers have found four new moons orbiting Jupiter and 11 new moons around Saturn.

Jupiter Icy Moons Explorer (JUICE) probe is on its (very long) way to Jupiter, and will finally arrive at the King of Planets ...

The newly discovered moons are "irregular" satellites, meaning they are small (averaging about 3 km across) and have distant, ...

Observations from the James Webb Space Telescope show how Jupiter reacts to its moons through auroral footprints, plasma ...

Using the Webb telescope, scientists discovered an unexpectedly cold, dense region within Io’s auroral footprint in Jupiter’s northern lights.

Turn a telescope to the eastern sky in the hours following midnight on Nov. 5 to see two colossal shadows darken the cloud tops of the gas giant Jupiter as the Galilean moons Io and Europa pass ...