Thalassa

Thalassa was discovered by the Voyager 2 spacecraft during its 1989 flyby of Neptune and is one of the planet's innermost satellites. Named after the sea goddess Thalassa in Greek mythology, this moon orbits Neptune at an average distance of around 50,074 kilometers from the planet's center. With an estimated diameter of about 82 kilometers, Thalassa boasts an irregular shape, though specific surface features remain largely undisclosed due to its diminutive size and considerable distance from Earth. Its significance lies in its gravitational interactions, alongside Naiad, with Neptune's rings, particularly the Adams Ring, playing a role in preserving the structure of this ring system. Thalassa, believed to be a captured object from the Kuiper Belt or asteroid belt, is a subject of continued scientific interest and exploration within Neptune's moon system.