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

The Moon passes 5° north of Jupiter at 7 A.M. EDT. Early risers can enjoy the pairing before sunrise, standing some 50° high in the east an hour before the Sun crests the horizon. Now in its waning ...

"We're not saying, and we can't say, that there's no life in Europa. What we're saying is that it's a harder proposition, ...

We already know a decent amount about how planets form, but moon formation is another process entirely, and one we're not as familiar with. Scientists think they understand how the most important 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 ...

It's a world home to gigantic storms bigger than Australia, 100-mph winds pummeling its northern reaches and a rocky moon riddled with lava-spewing volcanoes. Welcome to Jupiter. NASA scientists have ...

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

The hellish surface of a moon of Jupiter known as Io is riddled with hundreds of lava-spewing volcanoes that make the world one of chaos and violence. The brutal conditions also make Io intriguing to ...

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

On January 23, skywatchers will witness a beautiful conjunction of Saturn and the Moon. During a conjunction, celestial bodies appear close together in the sky, although they are actually far apart in ...