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 ...

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

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

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

New data from NASA's Juno orbiter reveals Jupiter is slightly smaller and more 'squashed' than scientists previously thought.

Sky This Week is brought to you in part by Celestron. Friday, February 6The bright star Sirius dominates the southern sky ...

For 400 years, astronomers have stared through tiny eye-pieces to admire Jupiter. But now, with the NASA spacecraft Juno in orbit, we’re due some pretty breathtaking images of the largest planet in ...

Five volcanoes on Jupiter’s moon Io erupted simultaneously, releasing an enormous amount of lava and offering new clues about what lies beneath the moon’s surface. This unprecedented event, observed ...

Jupiter will be bright through September as it reaches opposition on September 26, when it will be exactly opposite the Sun in our sky. Jupiter and Saturn will be easy to spot Friday night as the Moon ...

Scientists with expertise in geophysics at Washington State University have developed an alternative pathway for the ...