The Celtic myths, involving heroic warriors such as Finn and CuChulinn, can be read as simple primitive stories, but closer examination reveals strange descriptions and relationships. The authors of this groundbreaking book argue that all the principal characters are aspects of the one Celtic sky god, Lugh, who was a comet. Against the background of a comet scenario, this re-interpretation of about 10 key Celtic myths shows how many of the descriptions in the myths fit the appearance of comets.