Mythological Background:
The names of the two brightest stars of this constellation, Castor and Pollux, can be found in the greek mythology: One day Zeus seduced Leda, the wife of the King of Sparta, Tyndareos. To get Leda Zeus changed himself to a swan. Leda became pregant and gave birth to the twins Pollux and Castor and to a girl named Helena. This was the same Helena who was robbed by Paris and brought to Troja; this was the reason for the start of the trojanian war.