Jupiter's moon count reaches 95+ official satellites. Explore the history of the Jovian system, from Galileo to the latest NASA discoveries.

The Jovian moons Io and Europa will throw their shadows over Jupiter's cloud surface in the early hours of Nov. 5. When you purchase through links on our site, we may earn an affiliate commission.

There’s no mistaking Jupiter in the sky these winter evenings, rising in the southeast as evening twilight ends. In fact, you should be able to easily see it long before twilight fades. Jupiter is ...

We already know a decent amount about how planets form, but moon formation is another process entirely, and one we're not as familiar with. Scientists think they understand how the most important moon ...

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 ...