recovery of the lost moon from 2002. Discovery of outer planet moons   Moons of Jupiter   Moons of Saturn   Moons of Uranus   Moons of Neptune Triton did...

Although the second-most-massive Neptunian moon, it is only 0.25% the mass of Triton. Neptune's innermost four moons—Naiad, Thalassa, Despina and Galatea—orbit...

known moons, and is also more massive than all known moons in the Solar System smaller than itself combined. Also, with a diameter 5.5% that of Neptune, it...

second-largest moon of Neptune and is the largest of its regular prograde moons. It is about 420 km (260 mi) in diameter, larger than Nereid, Neptune's third-largest...

Neptune II, is the third-largest moon of Neptune. It has the most eccentric orbit of all known moons in the Solar System. It was the second moon of Neptune...

between 2004 and 2009. The moon is so dim that it was not observed when the Voyager 2 space probe flew by Neptune and its moons in 1989. It is about 35 km...

Lassell, Arago, and Adams. Neptune also has a faint unnamed ring coincident with the orbit of the moon Galatea. Three other moons orbit between the rings:...

of outer planet moons   Moons of Jupiter   Moons of Saturn   Moons of Uranus   Moons of Neptune Although the first two Uranian moons were discovered in...

in its trajectory. Voyager 2 studied Neptune's atmosphere, Neptune's rings, its magnetosphere, and Neptune's moons. The Neptunian system had been studied...

more irregular moons than Jupiter. Discovery of outer planet moons   Moons of Jupiter   Moons of Saturn   Moons of Uranus   Moons of Neptune The modern names...