Ganymede

Largest moon in the Solar System.

Bigger than Mercury and the only moon known to generate its own magnetic field.

See also

The most volcanic body in the Solar System.

Rhea

Saturn's second-largest moon.

Titania

The largest moon of Uranus.

Oberon

Uranus' second-largest and outermost major moon.

The Moon

Earth's constant companion.

Europa

Jupiter's ice world with a hidden ocean.