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

A new finding of ammonia on the icy surface of Jupiter's moon Europa could have important implications for the search for ...

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

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

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 ...

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 ...

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 ...

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

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 ...

What if Jupiter’s 79 moons weren’t gravitationally bound to Jupiter? What if they became rogue objects orbiting on their own ...