And thus, Io, Europa and Ganymede became known as the Galilean moons of Jupiter. Learn more about NASA’s current mission to Europa here. Multimedia editor Rob Landers wrote and verified this ...

There are currently 92 moons known to orbit Jupiter. The four largest – Io, Europa, Ganymede and Callisto – were discovered by Galileo Galilei in 1610 when he pointed the first astronomical telescope ...

They are more commonly referred to as the Galilean moons of Jupiter owing to the fact that they were discovered by Galileo. The four Galilean moons – Io, Europa, Ganymede and Callisto – are ...

The eruption released energy six times greater than all Earth's power plants combined, exceeding 80,000 trillion watts.

Europa Clipper - one of the most advanced spacecraft ever sent to another planet - aims to explore Jupiter's icy moon ...

The Galileo probe expanded on our knowledge of Jupiter's moon, Io, showing us just how hot and hellish the Jovian satellite could be.

Seastar Smart Telescope helped the enthusiasts capture stunning images of planets and nebulae, while the 8-inch Dobsonian ...

NASA's latest findings indicate that Jupiter's volcanic moon Io does not have a global ... spacecraft and archival observations from the Galileo mission. The study suggests that Io's interior ...

Galileo’s repeated observations over several nights and realized they were moons orbiting the gas giant. And thus, Io, Europa and Ganymede became known as the Galilean moons of Jupiter.

On this date, Jan. 17, 2002, the Galileo probe made it’s 33 rd pass of Jupiter’s moon, Io. After Voyager 1’s pass in 1979, Io was dubbed the most volcanically active place in the solar system.