Chiron
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Chiron , in Greek mythology, centaur, son of Kronos. He was a renowned sage, physician, and prophet. Among his pupils were Hercules, Achilles, Jason, and Asclepius. When Hercules accidentally wounded Chiron, the pain was so great that Chiron surrendered his immortality to Prometheus and died. Zeus then set him among the stars as the constellation Sagittarius.