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
Ab ovo "soup to nuts". Thus "ab ovo" can also be used to mean a complete or entire thing. Ab ovo Ab ovo (Latin: "from the beginning, the origin, the egg") is a reference to one of the twin eggs from which Helen of Troy was born. The eggs were laid by Leda after mating with Zeus disguised as a swan. Had Leda not laid the egg, Helen would not have been born, so Paris could not have eloped with her, so there would have been no Trojan War. The English literary use of the phrase comes from Horace's "Ars Poetica", where