None. Io is itself one of the moons of the planet Jupiter. No moon has its own moons.
Ganymede and Io are both moons of Jupiter.
No. Io is one of the four major moons of Jupiter. The moons of Mars are Phobos and Deimos.
Io is one of the moons of Jupiter and is most unlikely to have a moon of its own.
Europa is one of Jupiter's moons. Actally theres Europa, Callisto, Ganymade, and Io. :] Ganymede, Io, Europa and Callisto Jupiter has 67 moons, of which four are major. Those moons are Io, Europa, Ganymede, and Callisto.
Io
They are all moons of Jupiter.
It is Jupiter.
Jupiter's count of moons is currently at 63. The four most important moons are Ganymede, Europa, Callisto, and Io.
Jupiter has the Moon called Io - the most volcanically active object in our solar system.
IO is the fifth moon of Jupiter in terms of distance from Jupitert and the primary of the Galilean moons.
Europa and Io are two of the many moons of Jupiter
Io and Ganymede are two of Jupiter's moons, with Io being known for its volcanic activity and Ganymede being the largest moon in the solar system. Amalthea is another of Jupiter's moons, known for its irregular shape and reddish color.