<human>:  Who was the first person to see the moons of Jupiter?
<bot>: The first person to see the moons of Jupiter was Galileo Galilei in 1610. He was the first person to see the four largest moons of Jupiter, which he named after the four seasons: Io, Europa, Ganymede, and Callisto. He also discovered four other moons, including one that he named after himself: the Galilean moons.