Jupiter’s largest moons

Galileo discovered Jupiter’s largest moons in 1610. Another astronomer of the time, Simon Marius, named them Io, Europa, Ganymede and Callisto after the lovers of Zeus, the ancient Greek mythological King of the Gods and Men. Currently Jupiter has 53 named moons and another 26 awaiting official names. Combined, scientists now think Jupiter has 79 moons.

Image courtesy of NASA.