The four Galilean moons of the largest planet in the Solar System! Io is the meanest and most hot tempered celestial body in the Solar System due to his volcanic activity and the tidal forces from the planet Jupiter. Europa is the most lustful and seductive moon of Jupiter. Ganymede is the Australian man if he were a moon. Callisto is the shyest moon of Jupiter, and possibly the oldest of Jupiter's Galilean moons!