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Meaning & History
Hadar and Agena are the traditional names of a star in the constellation Centaurus, also known as the Beta Centauri. It bore the traditional names HADAR and Agena. Hadar comes from the Arabic حضار (the root's meaning is "to be present" or "on the ground" or "settled, civilized area"), while the name Agena is thought to be derived from the Latin genua, meaning "knees", from the star's position on the left knee of the centaur depicted in the constellation Centaurus.