
1) Greek girl name 2) Greek pop music group 3) Greek sea goddess 4) Moon of Neptune
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https://www.crosswordclues.com/clue/thalassa
[moon] Thalassa (ə {Respell|thə|LASS|ə}; Greek: Θάλασσα), also known as Neptune IV, is the second innermost satellite of Neptune. Thalassa was named after sea goddess Thalassa, a daughter of Aether and Hemera from Greek mythology. `Thalassa` is also the Greek word for `sea`. Thalassa was discovered sometime before mid-September 19...
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http://en.wikipedia.org/wiki/Thalassa_(moon)
[mythology] In Greek mythology, Thalassa (ə; Θάλασσα, `Sea`) is a primordial sea goddess, daughter of Aether and Hemera. With sea god Pontus, she was the mother of the nine Telchines and Halia. According to a myth recounted by Hesiod, she gave birth to Aphrodite when Cronus cut the genitalia of Uranus that subsequently fell into the...
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http://en.wikipedia.org/wiki/Thalassa_(mythology)

the sea in its calm aspect. Consort to Pontus.
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http://www.chalquist.com/writings/greekmyth/

The second moon of Neptune in order from the planet. Thalassa was discovered in September 1989 by the Voyager Imaging team. It is named after a daughter of Aether and Hemera in Greek mythology and is also known as Neptune IV. Like the five other inner moons discovered during the 1989 flyby of Voyage...
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http://www.daviddarling.info/encyclopedia/T/Thalassa.html

Satellite of the planet Neptune. See TABLE 10. NEPTUNE - SATELLITE DATA
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http://www.encyclo.co.uk/local/20448

Thalassa is a cultivated variety of potato.
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http://www.probertencyclopaedia.com/browse/QT.HTM
No exact match found.