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Alpha Geminorum (Castor, The Horseman) is a wonderful multiple system of six components.
The twins Castor and Pollux were known from antiquity and even featured on coins in Greece and throughout the Roman Empire. Romans knew them as the Sons of Zeus.
Gemini is one of the more easily found constellations, found to the northeast of Orion or due north of the bright and solitary Procyon (alpha Canis Minoris).
From the brightest star in the Winter sky, Sirius, describe a curving line northward, through Procyon and then slightly westward to the twin stars.
Castor and Pollux are in the same field of view: binoculars. Castor is pale blue and Pollux is orange (or yellow). Pollux is actually the brighter of the two stars, 1.2 compared with 1.6.
In the same field of view as Castor can be seen tau Geminorum to the west: binoculars. This is Castor's 'chest' and from this point two outlying stars mark his hands: theta Geminorum to the northwest (out of the same field of view) and iota Geminorum.
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