This is an interesting question which planet in our solar system has the largest moon.
Most of has know that earth has one moon and many doesn’t know that other planets to have moons.
Jupiter his proving to be a fascinating world. Not only is it the largest moon in our solar system bigger than the planet Mercury and the dwarf planet Pluto.
One of Jupiter’s moons, Ganymede, is the largest moon in the Solar System.
Jupiter’s icy moon Ganymede is the largest moon in our solar system, even bigger than the planet Mercury, and the dwarf planet Pluto. There’s strong evidence that Ganymede has an underground saltwater ocean that may hold more water than all the water on Earth’s surface.
Ganymede, a satellite of Jupiter, is the largest and most massive of the Solar System’s moons. The ninth-largest object of the Solar System, it is the largest without a substantial atmosphere.
View on Maps: google.com/maps/space/ganymede
Radius: 2,634.1 km
Orbital period: 172 hours
Gravity: 1.428 m/s²
Surface area: 8.72×107 km2 (0.171 Earths)
Surface pressure: 0.2–1.2 μPa (1.97×10−12–1.18×10−11 atm)
Discoverers: Galileo Galilei, Simon Marius