Researchers now appreciate that gas planets are more complex than first thought. New findings have implications for our ...

If you looked at the churning clouds near Jupiter’s pole, they appear like ocean currents on Earth — as if you’re looking at ...

When people think of meteor showers, they often picture themselves reclining under a star-filled sky and watching fleeting streaks of light paint the heavens. Most meteor showers, such as the ...

A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow up 2,000 Earths.

On the fiery Io, the innermost and third-largest of Jupiter’s four Galilean moons, Juno's observations have provided more insights about its incessant volcanic activity.

This montage shows views of Jupiter's four 'Galilean moons' as captured by the LORRI camera system on NASA's New Horizons spacecraft in 2007 as it picked up extra momentum for its target, the dwarf ...

Galileo, who had observed Jupiter’s four major moons (now also called as the Galilean moons) on January 7, 1610 (Gregorian calendar), had already published Sidereus Nuncius (The Sidereal ...

Jupiter’s largest moons, known as the Galilean moons, are known not only for their size but for their unique features. Discovered in 1610 by Galileo Galilei, these moons—Ganymede, Callisto, Io ...

Sunday: The International Space Station will shine brightly in the sky tonight. The space station begins not far from the bright star Canopus in the northwestern sky at 9:31 p.m.

As a result, the Galilean moons look nothing like dead worlds such as Earth’s own moon. Of the quartet, Io is the closest, so it experiences the full wrath of Jupiter’s gravity.

Astronomers continue to make new discoveries about the Galilean moons of Jupiter, a thrilling environment of ice and fire.. In a pair of studies published this month, the James Webb Space ...

Jupiter's four Galilean moons were discovered by Italian astronomer Galileo Galilei in 1610. NASA's Juno spacecraft launched from Earth in 2011 and entered Jupiter's orbit in 2016.