Observatory
The solar system, live
Every planet where it is right now, worked out in your browser from NASA JPL's orbital elements. Turn the time machine, look through the eyepiece at Jupiter's moons, or click a planet for its card.
Through the eyepiece: Jupiter
North up, east left, as in binoculars. Io goes round in under two days, so the moons move visibly in a few hours: press play at 1 h/s.