astronautics any of a series of manned US spacecraft launched between the Mercury and Apollo projects to improve orbital rendezvous and docking techniques
4.
astrology
a. Also called: the Twins the third sign of the zodiac, symbol ♊, having a mutable air classification and ruled by the planet Mercury. The sun is in this sign between about May 21 and June 20
Gemini (jěm'ə-nī') Pronunciation Key
A constellation in the Northern Hemisphere near Cancer and Auriga. Gemini (the Twins) contains the bright stars Pollux and Castor and is the third sign of the zodiac.