Thalassa

Thalassa, also known as Neptune IV, is a natural satellite of the outer planet, Neptune. Thalassa was discovered in September 1989 by the Voyager Imagery Team.

Surface Features

The surface of Thalassa is unknown, because we haven't been close enough to the Neptunian moon to accurately see all of its features.

Solar System
Stars	Sun
Planets	Mercury \| Venus \| Earth \| Mars \| Jupiter \| Saturn \| Uranus \| Neptune \| Planet Nine \| Chaos \| Nemesis
Dwarf Planets	Ceres \| Pluto \| Eris \| Makemake \| Haumea \| Orcus \| Sedna
Moons	Luna \| Phobos \| Deimos \| Io \| Sinope \| Ganymede \| Europa \| Callisto \| Amalthea \| Metis \| Megaclite \| Himalia \| Elara \| Dia \| Pasiphae \| Lysithea \| Carme \| Callirrhoe \| Themisto \| Taygete \| Adrastea \| Chaldene \| Harpalyke \| Kalyke \| Iocaste \| Erinome \| Isonoe \| Praxidike \| Autonoe \| Thyone \| Hermippe \| Aitne \| Titan \| Hyperion \| Enceladus \| Tethys \| Mimas \| Dione \| Rhea \| Iapetus \| Phoebe \| Janus \| Epimetheus \| Helene \| Telesto \| Calypso \| Atlas \| Prometheus \| Pandora \| Pan \| Methone \| Pallene \| S/2004 S 17 \| Miranda \| Titania \| Ariel \| Umbriel \| Oberon \| Triton \| Thalassa \| Proteus \| Larissa \| Despina \| Charon \| Nix \| Hydra \| Kerberos \| Styx \| Dysnomia \| Vanth \| Hiʻiaka \| Namaka
Asteroids	Juno \| Pallas \| Vesta \| Chiron \| Ida \| Dactyl
Other	Asteroid Belt \| Kuiper Belt