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

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

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 ...

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

Sky This Week is brought to you in part by Celestron. Friday, January 9Mars is in conjunction with the Sun at 7 A.M. EST, invisible in our sky until mid-March. The bright moon Titan lies near its ...

Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes ...

The giant planet Jupiter has nearly 100 known moons, yet none have captured the interest and imagination of astronomers and space scientists quite like Europa, an ice-shrouded world that is thought to ...

Jupiter is the biggest planet in our Solar System. With 79 moons, it falls just behind Saturn’s moon count of 82. Imagine looking up into the night sky and seeing not one but 79 different moons ...

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 ...

Jupiter reaches opposition overnight on Jan. 10, when it appears its brightest in 2026 opposite the sun in Earth's sky.

A trio of planets accompanied the moon in the sky on Friday, Dec. 10. Jupiter, Saturn and Venus fell in line with the crescent moon in the southwestern sky shortly after nightfall, according to ...