This name derives from the Roman cognomen “Geminus”, based on the Latin Adjective “gĕmĭnus > gĕmellus”, meaning “twin, double, paired”. 1) Gemini is one of the constellations of the zodiac. It was one of the 48 constellations described by the 2nd century AD astronomer Ptolemy and it remains one of the 88 modern constellations today. The sun transits this sign between May 21 and June 20. The symbol of the twins is based on the Dioscuri, two mortals that were granted shared godhood after death. 2) Saint Geminianus was a fourth century Deacon, and later Bishop of Modena. He is mentioned in the year 390 when he sent a delegate named Aper to participate in a council called by Saint Ambrose in Milan. 3) Project Gemini was NASA's second human spaceflight program. It was a United States government civilian space program started in 1961 and concluded in 1966.