The half-lit lunar disk will rise alongside the ringed giant Saturn and dimmer Neptune in the early morning hours of June 19, putting on a spectacular show just six hours after the moon hits its third ...

A new moon was found near Neptune, joining the other 13 we knew about. It's so small that it wasn't detected during the Voyager 2 flyby in 1989.

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 ...

When Voyager II flew past Neptune in August of 1989 it revealed a complex system of 13 moons, six of which had never been seen before. Neptune has a tiny moon we've never seen until now. Here's ...

The Neptune neighbor, missed until now, offers clues to how moons form and shows once again that space is more crowded than it seems. Neptune's newfound moon, Hippocamp, might be left over from a ...

Astronomers have found a new moon orbiting the solar system's outermost planet, Neptune. The tiny moon, just 12 miles across, was discovered in more than 150 pictures of Neptune taken by the ...

And Neptune’s largest moon, Triton, is an oddity in more ways than one. It hosts geysers that hurtle nitrogen gas five miles into the atmosphere, and might be linked to a subsurface ocean.

A diminutive nugget of a moon has been discovered lurking in the inner orbit of Neptune. The moon, dubbed Hippocamp for the half-horse, half-fish sea monster from Greek legend, is about the size ...

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.

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 ...