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From Earth to Pluto: A Digital Time Capsule for the World of Tomorrow
 

Space Topics: Compare the Planets

Moons of the Solar System

Just How Many Are There?

Epimetheus
Saturn's moon Epimetheus
NASA / JPL / SSI

A whirlwind of "new moon" discoveries have kept teachers, textbooks, and web sites scrambling to keep up. In an effort to set the record straight, listed below are the number of known moons in our solar system as of November 2005.

Planet Number of Moons
Mercury 0
Venus 0
Earth 1
Mars 2
Jupiter 63
Saturn 47
Uranus 27
Neptune 13
Pluto 3

 

Named Moons

Follow the links below to find out more about the moons in the solar system that have been given names, or visit our news archives to find out the details of the discoveries of the new moons.

More about Earth's moon

More about Mars' moons: Phobos and Deimos

More about Jupiter's moons: Metis, Adrastea, Amalthea, Thebe, Io, Europa, Ganymede, Callisto, Themisto, Leda, Himalia, Lysithea, Elara, Carpo, Euporie, Orthosie, Euanthe, Thyone, Mneme, Harpalyke, Hermippe, Praxidike, Thelxinoe, Helike, Iocaste, Ananke, Eurydome, Arche, Autonoe, pasithee, Chaldene, Kale, Isonoe, Aitne, Erinome, Taygete, Carme, Sponde, Kalyke, Pasiphae, Eukelade, Megaclite, Sinope, Hegemone, Aoede, Kallichore, Callirrhoe, Cyllene...

More about Saturn's moons: Pan, Daphnis, Atlas, Prometheus, Pandora, Epimetheus, Janus, Mimas, Methone, Pallene, Enceladus, Telesto, Tethys, Calypso, Helene, Dione, Polydeuces, Rhea, Titan, Hyperion, Iapetus, Albiorix, Erriapo, Tarvos, Kiviuq, Ijiraq, Paaliaq, Siarnaq, Narvi, Skathi, Phoebe, Mundilfari, Suttungr, Thrymr, Ymir...

More about Uranus' moons: Cordelia, Ophelia, Bianca, Cressida, Desdemona, Juliet, Portia, Rosalind, Belinda, Puck, Miranda, Ariel, Umbriel, Titania, Oberon, Caliban, Stephano, Trinculo, Sycoraz, Prospero, Setebos...

More about Neptune's moons: Naiad, Thalassa, Despina, Galatea, Larissa, Proteus, Triton, Nereid...

More about Pluto's moons: Charon...