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.