Thalassa, also known as Neptune IV or S/1989 N 5, is a moon orbiting Neptune. Thalassa is Greek for Sea. Thalassa is the second closest moon to Neptune. Thalassa has an orbital period of 0.31148444 ± 0.00000006 Earth Days. Thalassa has a Mass of 374,667,108,274,298,000 kilograms, a Volume of 288,696 kilometers cubed, a Mean Radius of 40.7 ± 2.8 kilometers, a Mean Density of 1.23 ± 0.43 grams per centimeter cubed and a temperature of around 51 Kelvin or -222.15 degrees Celsius.
Profile of Thalassa
Thalassa was discovered a little before September 18th, 1989 by New York Astronomer Richard John Terrile and The Voyager Imaging Team using images captured by The Voyager 2 Probe. The name Thalassa would be given to the newly discovered moon on September 16th 1991. Thalassa is a disk-shaped moon believed to be made up of different parts of broken pieces of other moons orbiting Neptune such as Triton.
Thalassa is named after The Classical World Primordial goddess of The Sea or Primeval Spirit of The Sea, Thalassa. Thalassa was the daughter of Aether, The Primordial god of the upper sky, and Hemera, The Primordial goddess of the day. Thalassa siblings were Gaia, The Primal Mother Earth goddess, and Uranus, The Primordial god of the sky. Thalassa is known for spawning the storm gods or giants and The tribes of fish. Also Thalassa is the mother of Aphrodite, The goddess of Love, Beauty, Pleasure, passion and procreation, and Halia, a nymph who lived on the island of Rhodes. Thalassa and her husband Pontus, The Primordial Sea god, would one be replaced by new marine god couples, first being Oceanus and Tethys, Titan god and goddess of the sea, and then Poseidon and Amphitrite, Olympian god and goddess of the sea.
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