Medusa, the Gorgon, who turns those who gaze upon her to stone, is one of the most popular and enduring figures of Greek mythology. Long after many other figures from Greek myth have been forgotten, she continues to live in popular culture. In this fascinating study of the legend of Medusa, Stephen R. Wilk begins by refamiliarizing readers with the story through ancient authors and classical artwork, then looks at the interpretations that have been given of the meaning of the myth through the years. A new and original interpretation of the myth is offered, based upon astronomical phenomena....