Pollux, designated β Geminorum, is an orange-hued evolved giant star about 34 light-years from the Sun in the constellation of Gemini. It is the brightest star in Gemini and the closest giant star to the Sun. Castor and Pollux (or Polydeukes) are twin half-brothers in Greek and Roman mythology, known together as the Dioscuri. Their mother was Leda. Pollux /ˈpɒləks/, designated β Geminorum is an orange-hued evolved giant star about 34 light-years from the Sun in the constellation of Gemini. Pollux, also known as Beta Geminorum, is slightly brighter than Castor. It shines with a golden glow while Castor appears whiter. Dioscuri, also called (in French) Castor and Polydeuces and (in Latin) Castor and Pollux, (Dioscuri from Greek Dioskouroi, “Sons of Zeus”), in Greek and. Pollux, also called Beta Geminorum, brightest star in the zodiacal constellation Gemini. A reddish giant star, it has an apparent visual. Finally, the POLLUX database is the only one providing CMFGEN based high resolution synthetic spectra for O-type stars and soon also for Wolf-Rayet stars. In. Castor and Pollux (the Dioscuri) are figures from Greek and Roman mythology considered the twin sons of Zeus or Jupiter. Semi-divine figures. 2: a first-magnitude star in the constellation Gemini. First Known Use of Pollux. , in the meaning defined at sense 1. History and Etymology for Pollux. Pollux is a red giant star that has exhausted its supply of hydrogen, and is now fusing helium into carbon and other elements. Like other red.