the biggest moon is gaymede
No, Charon is not the biggest moon in the solar system. The actual biggest moon in the solar system is Ganymede, which is 5,268 km at the equator
Ganymede
Io is not. It's Ganymede, the biggest moon in the solar system.
The fourth biggest moon in our Solar System is Io a moon of Jupiter. See related question.
The fifth largest moon in our Solar System is our Moon.
Moon
Titan is the biggest moon of saturn and the second biggest in the solar system
People don't know that and probably never will but the biggest moon in our solar system is Jupiters moon Ganymede
The largest moon in the solar system is Ganymede, one of the moons of Jupiter.
Callisto - a moon of Jupiter is the third largest moon in the Solar System. See related link for more information.
Ganymede - moon of JupiterTitan - Moon of SaturnCallisto - moon of Jupiter
Ganymede is the largest Galilean moon, the largest Jovian moon, and the largest moon in the solar system.