The moon greets Jupiter two days ahead of its full moon phase on Feb. 1.

Using data gathered by NASA's Juno Jupiter orbiter, scientists estimate that Europa's ice shell is about 18 miles thick — ...

Europa is one of Jupiter’s 95 moons, and, perhaps, among the planet’s most famous orbiters. It’s covered in a shell of ice that likely sits atop a global saltwater ocean that’s estimated to be around ...

Mercury, Venus, and Saturn put on an early-evening display in the west, while Jupiter dominates the rest of the night.

There’s no mistaking Jupiter in the sky these Butler winter evenings, rising in the southeast as evening twilight ends. In ...

"What makes the event even more extraordinary is that it did not involve a single volcano, but multiple active sources." ...

Research into Jupiter’s moons shows Io and Europa did not evolve apart but formed with opposite compositions from the beginning.

"Most excitingly, this new idea addresses one of the longstanding habitability problems on Europa and is a good sign for the ...

February stargazing is so special. Sure it’s cold but the extra special celestial jewels make it worth bundling up for. If you’re not already in the darker countryside, try to get out there. But ...

A group of astronomers from the Carnagie Institution for Science announced on Monday that they discovered 12 previously undiscovered moons orbiting Jupiter, including one the institution is calling an ...

NASA's Galileo mission launched in 1989 and was operated by the Jet Propulsion Laboratory in Southern California.

While Io, the most volcanically active moon in the solar system, appears completely dry and devoid of water ice, its neighbor Europa is thought to harbor a vast global ocean of liquid water beneath ...