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

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

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 ...

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 ...

Jupiter, the giant planet, appeared to align closely with the full Wolf moon, creating a stunning celestial display visible ...

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

A comet from another star system will swing by Mars on Friday as a fleet of spacecraft trains its sights on the interstellar visitor. We already know a decent amount about how planets form, but moon ...