Icy moon Ganymede—which JUICE will orbit—appears ... “We’re going to be spending a lot of time in Jupiter’s magnetosphere and we’re going to be coming up out of the equatorial plane ...

Ganymede is an enormous moon, larger than any other we’ve found, including our own, and may one day be the centerpiece of wider human settlements around Jupiter.

The moon is so volcanic because of tidal forces caused by gravitational interactions with Jupiter and its other large moons, Europa and Ganymede. Using its Microwave Radiometer, Juno detected heat ...