. The Gemini. The Gemini is a zodiak constellation. The stars Castor and Pollucs presents the twins' heads and theeir bodies lead down to the Mylky Way, to the Orion side. The Greeks called the stars so, because Castor and Pollucs were the names of Zevs sons. Castor is a visible triple system and its both bright components are the double stars and the weak one is an eclipsed double system. So Castor is a multiple system of the six stars. Back .