List Of The Solar System’s 30 Biggest Moons
Biggest To Smallest
Here you can learn about the 30 largest moons (by diameter) in the solar system! There are over 180 moons that orbit the planets and dwarf planets. The largest 19 moons in the list below are large enough to have been rounded by their own gravity (this is called being in hydrostatic equilibrium). If these moons were directly orbiting the Sun, that'd be referred to as planets or dwarf planets! In fact, the 7 largest moons are larger than any of the known 5 dwarf planets. The largest two moons, Ganymede and Titan, are even larger than the Planet Mercury!