Neptune has 13 known moons. The largest by far is Triton, discovered by William Lassell just 17 days after the discovery of Neptune itself. It took a hundred years to discover the second, Nereid.

Neptune's original family of satellites may have been destroyed when its largest moon, Triton, entered the picture. New research suggests that the massive moon may have tossed some of the original ...

In terms of mass, if you add up all the satellites of Neptune, Triton composes 99.5% of the mass of everything orbiting Neptune: moons, moonlets, and rings all included.

It's too bad for Neptune's original satellites that the ice giant didn't start out with more moons. Rufu and Canup found that a more massive primordial family could have meant doom for Triton.

Far beyond the reach of the terrestrial and gas giant planets in our solar system exists an entirely different class of world known as ice giants. Uranus and Neptune are among this distinct class of ...

Voyager 2 obtained this parting shot of Triton, Neptune's largest satellite, shortly after closest ... More approach to the moon and passage through its shadow on the morning of Aug. 25, 1989.

Triton was discovered in 1846 by the British astronomer William Lassell, but much about Neptune’s largest moon still remains a mystery.A flyby by NASA's Voyager 2 spacecraft in 1989 offered a ...

Gravity might have pulled Triton away from its companion to make it an orbiting satellite of Neptune, researchers report in a new study published in the May 11 issue of journal Nature. You may like ...

Triton is also an “irregular” satellite that has an inclined, circular orbit around Neptune. It is highly unlikely that the moon formed in such a configuration and was probably captured from elsewhere ...

Neptune' s largest moon ... Triton was discovered in 1846 by the British astronomer William Lassell, ... A flyby by NASA's Voyager 2 spacecraft in 1989 offered a quick peek at the satellite, ...

Triton isn’t just any moon – it’s one of the most mysterious objects in the entire solar system. In this video, we explore what makes Neptune’s largest moon so strange, from its backward ...