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 ...

Jupiter is about to dominate the midwinter sky, turning January evenings into a showcase for the biggest planet in the solar system. As Earth lines up almost perfectly with Jupiter and the sun, the ...

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 ...

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

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 ...

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

How nutrients from Europa's icy shell reach its ocean has been unclear despite several theories.

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 ...