While Io, the most volcanically active moon in the solar system, appears completely dry and devoid of water ice, its neighbor ...

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 ...

New models suggest that Europa has very little tectonic activity at its seafloor, which is potentially catastrophic news for ...

The giant planet Jupiter has nearly 100 known moons, yet none have captured the interest and imagination of astronomers and ...

On January 7, 1610, the Italian astronomer Galileo discovered three of Jupiter's moons: Callisto, Europa and Io. When he ...

After passing Earth, interstellar comet 3I/ATLAS will fly close to Jupiter and its moon Eupheme in March 2026, marking a key moment in its outbound journey ...

Unfortunately for planet hunters, Mercury, Venus and Mars are all too close to the sun to observe; they will come out of the ...

Jupiter reaches opposition, making it brighter and larger than at any other time this year. A rare transit of its moon ...

Astronomers have discovered 12 new moons around Jupiter, putting the total count at a record-breaking 92. That's more than any other planet in our solar system. Saturn, the one-time leader, comes in a ...

Jupiter steals the spotlight in January as it reaches its brightest and biggest appearance of the year. The month also ...

The predawn hours of Aug. 8 present a perfect opportunity to see Jupiter's four largest moons line up next to the "King of the Planets" as it voyages through the stars of the constellation Gemini.

Shining in the constellation Gemini near the bright stars Pollux and Castor, Jupiter's opposition is the best time to see the ...