Four of Jupiter's moons: Io, Europa, Ganymede and Callisto — known as the Galilean moons — were the first celestial objects to be discovered orbiting an object other than the sun or Earth when ...

The origins of Jupiter's Galilean moons is a long-standing mystery. But new research suggests a promising pathway for how they may have formed. From bottom to top is Io, ...

This gas giant has some really unique features that make it stand out. If you’re curious about space, learning a few things ...

Jupiter's four best-known moons are the Galilean moons, discovered by Galileo Galilei in 1610. They are named Ganymede, Callisto, Io and Europa, after figures in Greek mythology associated with ...

Scientists have spotted 12 more moons around Jupiter, adding to an already-huge number that just seems to grow and grow. There's so many moons around this gas giant planet that astronomer Scott ...

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 ...

Jupiter's four best-known moons are the Galilean moons, discovered by Galileo Galilei in 1610. They are named Ganymede, Callisto, Io and Europa, after figures in Greek mythology associated with ...

According to Naoyuki Hirata, an assistant professor of planetology at Kobe University, the heftiest of Jupiter's Galilean moons likely experienced a smack from a massive asteroid when our own ...

If you're lucky, you'll spot the four Galilean moons: Ganymede, Callisto, Io and Europa. Italian astronomer Galileo Galilei first spotted Jupiter's moons in 1610.

If conditions are clear, anyone with a pair of binoculars or a telescope may even be able to pick out details, such as Jupiter’s four largest moons — Ganymede, Callisto, Io and Europa.The four ...

The celestial objects are so small, they're not even among Jupiter's four famous Galilean moons, which does include Io.But Amalthea and Thebe orbit the planet even closer than Io and have slightly ...