The moons of Jupiter are so innumerable and diverse that they are broken down into several groups. Jupiter has the most moons of any solar planet. There are seventy- nine known moons of Jupiter. The physical and orbital features of the moons vary widely.
Their orbital shapes range from nearly perfectly circular to highly eccentric and inclined, and many revolve in the direction opposite to Jupiter's spin or retrograde motion. The tiny moons on Jupiter orbit both inside and outside of where the outer moon's orbit, which puts it at risk for collision.