Small, icy and elusive: Scientists discover a new moon at Neptune that Voyager missed
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.
Thirty years later, scientists say the space probe missed one.
Using data from the Hubble Space Telescope, astronomers have discovered an elusive seventh ice moon around the ice giant that fell just out of Voyager's field of view. Its new name is Hippocamp.
