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Nature 423, 235-236 (15 May 2003) | doi:10.1038/423235a

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Planetary science: Jupiter's moonopoly

Douglas P. Hamilton

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A further 23 satellites have been discovered in orbit around Jupiter. With diameters of between two and eight kilometres, the moons are the smallest yet spotted around any planet.

Swinging serenely around the Sun, mighty Jupiter has reason to be pleased: its pre-eminence as the planet with the largest number of natural satellites, or moons, has been dramatically and decisively re-established. Fending off strong challenges from rival Saturn and wild card Uranus, the Solar System's largest planet now has nearly as many known moons as all of its competitors combined.