Neptune’s smallest moon may be a chunk of a neighboring moon that was knocked off by a comet. One of seven moons that orbit closer to Neptune than the planet’s largest moon, Triton, the newly dubbed ...

For the first time in decades, a new tiny moon has been found in orbit around the gas giant Neptune, according to a study published Wednesday in the journal Nature. Hippocamp, now known as Neptune’s ...

A faint and frigid little moon doesn't have to go by "Neptune XIV" anymore. Astronomers have given a name — "Hippocamp" — to the most recently discovered moon of Neptune, which also formerly went by S ...