| PHOEBE | This moon was discovered by the American astronomer William Henry Pickering in 1899. Roughly spherical and about 210 km (130 miles) in diameter, this moon has a mean distance from Saturn of about 12,9 |
| HYPERION | This moon is notable in that it has no regular rotation period but tumbles in an apparently random fashion in its orbit. It was discovered in 1848 by the American astronomers William Bond and George B |
| DIONE | This moon was discovered by the Italian-born French astronomer Gian Domenico Cassini in 1684 and named for a daughter of the Titan Oceanus in Greek mythology. It is accompanied in its orbit by two muc |
| IAPETUS | The outermost of Saturn's major regular moons, extraordinary because of its great contrast in surface brightness. This moon was discovered by Gian Domenico Cassini in 1671, it has a radius of 718 km ( |
| TETHYS | This moon was discovered in 1684 by the Italian-born French astronomer Gian Domenico Cassini and named for a Titan in Greek mythology. Its most impressive feature is Ithaca Chasma, a giant crack sever |
| ENCELADUS | The second nearest of the major regular moons of Saturn, the brightest of all its moons, and discovered in 1789 by the English astronomer William Herschel. The surface is almost pure water ice, with t |
| UMBRIEL | Moon of Uranus discovered by English astronomer William Lassell in 1851 and named after a character in Alexander Pope's The Rape of the Lock (1712) |
| MIMAS | The smallest and innermost of the major regular moons of Saturn. It was discovered in 1789 by the English astronomer William Herschel. Its most noteworthy feature is a 130-km- (80-mile-) diameter crat |
| RADIUM | Element atomic no. 88 that was discovered by the Curies in 1898 (6) |
| METIS | Discovered in July 1979 by the Voyager science team at NASA, this moon is named for Zeus's first wife, who was a Titan and the mother of Athena (5) |
| RHEA | Saturn's second-largest moon, discovered in 1672 by the Italian-born French astronomer Gian Domenico Cassini, this moon is named for a Titan of Greek mythology. |
| ARIEL | Fourth-largest moon of Uranus, discovered by British astronomer William Lassell in 1851 (5) |
| LYSITHEA | This moon, discovered in 1938 by Seth Barnes Nicholson, is named for the mother of Dionysus (8) |
| ADRASTEA | Smallest of the four inner moons of Jupiter, discovered by the space probe Voyager 2 in 1979 (8) |
| CAPEVERDE | African islands discovered by the Portuguese in the 15th century (4,5) |
| AMALTHEA | Discovered in 1892 by Edward Emerson Barnard, this moon circles Jupiter once every 11 hours 57 minutes. It is named for a naiad who was a nursemaid for Jupiter. (8) |
| PICKERING | Astronomer William Henry |
| SINOPE | This moon, discovered in 1938, is named for the nymph who outsmarted Zeus and Apollo (6) |
| TITANIA | Largest satellite of Uranus, discovered by British astronomer William Herschel in 1787 (7) |
| TRITON | Largest satellite of Neptune, discovered by English astronomer William Lassell in 1846 (6) |
