Saturday, August 22, 2009

Eclipse of Jupiter's Moons

Eclipses among Jupiter's four large Galilean satellites aren't that rare, but I've never seen images like this. Scroll down to about the middle of the page to see the animation of Io's shadow transiting Ganymede. Recall that Io is roughly the size of the Earth's Moon, and Ganymede is roughly the size of the planet Mercury.