The moons of the Solar System A moon is an object that rotates around a planet. Every planet except for Venus and Mercury have moons. The biggest moon in the Solar System is Ganymede, it has a diameter of 5,276 kilometres. It rotates around Jupiter. The smallest moon is Deimos, it has a diameter of only 16 kilometres. It rotates around Mars.
Our moon is the fifth biggest of the 62 moons in the Solar System. It has a diameter of 3,476. The planet with the most moons is Saturn, it has 17 of them. Europa, which rotates around Jupiter, is the only moon that is covered with ice. That makes its surface smooth and with very few craters.
Io constantly has volcanic eruptions because of the gravitational pull of Jupiter and three other moons. The coldest object in the Solar System is not Pluto but one of Neptune’s moons, Triton. Mercury and Venus have no moons. Earth has one, Mars, has two, Jupiter has sixteen. Saturn has eighteen, Uranus has fifteen, Neptune has eight, and Pluto has one. The five biggest moons in the Solar System are: Number 1 Ganymede, Number 2 Titan, Number 3 Callisto, Number 4 Io and Number 5 our Moon.
Mercury none Venus none Earth Moon Mars Phobos, Deimos Jupiter Mets, Actrastra, Thele, Io, Europa, Ganymede, Callisto, Lecla, Himabia, Lysithea, Elara, Amalthea, Ananne, Carme, Pasphae, Sinope Saturn Atlas, Prometheus, Pandora, Janus, Epimetheus, Mimas, Eceladus, Tethys, Telesta, Dione, Helene, Rhea, Titan, Hyperion, Iapetus, Phoebe, Calypso Uranus Cordelia, Ophelia, Bianca, Cressida, Desdemona, Juliet, Portia, Rosalind, Belinda, Puck, Miranda, Ariel, Umbriel, Titania, Oberon Neptune 1989 N6, 1989 N5, 1989 N4, 1989 N3, 1989 N2, 1989 N1, Triton, Nereid Pluto Charon.