Castor (star) in their spectra, and all are flare stars. "α Geminorum" (Latinised to "Alpha Geminorum") is the star system's Bayer designation. Castor and Pollux are the two "heavenly twin" stars that give the constellation Gemini (meaning "twins" in Latin) its name. The name "Castor" refers specifically to Castor, one of the twin sons of Zeus and Leda in Greek and Roman mythology. The star was annotated by the Arabic description "Al-Ras al-Taum al-Muqadim", which translates as "the head of the foremost twin." In the catalogue of stars in the "Calendarium of Al Achsasi Al Mouakket", this star was designated "Aoul al
Leda and the Swan (Leonardo) style, is exquisitely finished, especially in the woman's breast; and for the rest of the landscape and the plant life are rendered with the greatest diligence. Unfortunately the picture is in a bad state because it is done on three long panels which have split apart and broken off a certain amount of paint." However the picture is known from many copies, of which the earliest are probably the "Spiridon Leda", perhaps by a studio assistant and now in the Uffizi, and the one at Wilton House in England. Other copies by Leonardeschi include: Leda and the Swan (Leonardo) The