What was believed to be a hemisphere above the ground, carrying the fixed stars and surrounding the seven spheres of the planets, through which the Sun and Moon moved in and out through a series of openings?
The constellation of Gemini includes which two bright stars?
A. Rosencratz and Guildenstern
B. Castor and Pollux
C. Captain and Tenille
D. Scylla and Charybdis