Prominent zodiacal constellation in the northern hemisphere represented as the twins Castor and Pollux. Its brightest star is Pollux
; Castor is a system of six stars. The Sun passes through Gemini from late June to late July. Each December, the Geminid meteors are seen, their trails giving the appearance of radiating from Gemini. In astrology, the dates for Gemini are between about 21 May and 21 June (see precession
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