Homer is renowned as the finest of the storytellers who for countless generations passed down by word of mouth the myths and legends of Ancient Greece. Yet, for some 2500 years there have been persistent folk memories that his genius extended far beyond literature and that scientific knowledge was hidden in his stories of heroes and villains, gods and ghosts, monsters and witches. Research now reveals that at a time when the Greeks did not have a written script, Homer concealed an astonishing range of learning about calendar making and cycles of the sun, moon and planet Venus in the Odyssey, his epic of the Fall of Troy and the adventures of the warrior-king Odysseus. With original research and content, this book is written to appeal to both popular and scholastic audiences, rolling back the history of Greek astronomy by three centuries.