InBabylonian astronomy, the stars Pollux and Castor were known as the Great Twins. Their names wereLugal-irra and Meslamta-ea, meaning "The Mighty King" and "The One who has arisen from the Underworld". Both names are titles ofNergal. Also could be referencing Zeus and Hades.[5]
InGreek mythology, Gemini is associated with the myth of Castor and Pollux, a pair of twins conceived by different fathers.Zeus, who seducedLeda and conceived Pollux whileTyndareus, the king of Sparta and Leda's husband, conceived Castor. When Castor died, because he was a mortal, Pollux begged his father Zeus to give Castor immortality, which was done through uniting them together in the heavens.
Astronomical Applications Department (2011).Multiyear Computer Interactive Almanac. 2.2.2. Washington DC: US Naval Observatory. Longitude of Sun, apparent geocentric ecliptic of date, interpolated to find time of crossing 0°, 30°....