cALListo

Greek The handmaiden of the goddess Artemis and the lover of the god Zeus, with whom she bore a child, Arcas, the ancestor of the Arcadians. Artemis, angry at Callisto's loss of virginity, changed her into a she-bear. One day, as the grown-up Arcas was hunting in the woods, he saw the she-bear and was about to kill her. Zeus, to prevent the young man from killing his own mother, changed them both into stars. Callisto became Ursa Major, the Great Bear. Arcas became Arcturus, Guardian of the Bear.