For many millennia the starry night sky has been a source of wonder and awe to men and women who have tried to unravel the mystery of the billion distant lights that fill the heavens after dark. The story of the great discoverers who succeeded in explaining part of the mystery is told here with the joy and infectious enthusiasm that only a fellow discoverer can convey. David Levy, codiscoverer of Comet Shoemaker-Levy 9, with his wife, Wendee Wallach-Levy, evokes that marvelous moment of "Eureka!" as he masterfully relates each story. He gives the reader a glimpse of the enthralling adventure of cosmic discovery through stories of the most famous and brilliant astronomers. Beyond their personal accomplishments, these scientists expanded all of humanity's understanding of the universe and our place within it.