The brutal conditions also make Io intriguing to NASA scientists intent on learning more about the innermost and ...

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.

The images from NASA’s Galileo spacecraft include the highest-resolution view yet of Io, one of Jupiter’s large moons. A bumpy plain in that image has dark and light patches interspersed like ...

Discovered by Galileo in 1610, Io has since become one of the most fascinating objects in planetary science. Orbiting just 350,000 km above Jupiter, Io experiences gravitational forces 300% ...

and that close to Io, the moon's gravity disturbs radio signals beamed from Juno to the spacecraft. Coupled with archival data from the Galileo spacecraft, researchers led by Ryan Park of NASA's ...

“Io is one of the most intriguing objects ... from previous missions that have flown by Jupiter and its moons, such as NASA’s Galileo spacecraft, as well as ground-based telescopes.

fast-moving moons: giant Ganymede, cratered Callisto, volcanic Io, and icy Europa. And there’s no better time to brave the cold and explore some of the Galilean moons’ most exciting events ...