This is a picture of Jupiter's moon Io floating over the planet's clouds, to remind you how freaking huge Jupiter is. Io is the same size as our own moon. To celebrate the battle of Jupiter's Red Spots, in which the original Daddy Red seems to be in the process of eating the other two, the Boston Globe posted a set of the greatest Jupiter photos of all time, from NASA. Click through for a few of our favorites, including some truly spooky views of Europa and Io.