With the coming darkness, the constellations above your heads recall monster stories from very long ago. The three stars in the summer triangle, overhead this evening, represent man-eating birds that were chased from the Stymphalian swamps by the hero Hercules. At sunset, the constellations of Scorpius the scorpion, Serpens the snake and Lupus the wolf are sinking into the southwest. A scattering of stars in the southeast this evening mark the location of Cetus the Whale – a sea monster in Greek mythology. Perseus the hero, over in the northeast, holds out the snake-haired head of the gorgon Medusa, while Draco the dragon guards the northern skies tonight. After midnight, Canis Major rises in the southeast. He is associated with the three-headed dog Cerberus who guarded the gates of the Underworld. And as dawn approaches, Leo the Lion and Ursa Major the Great Bear, rise up out of the eastern sky, hunting for fresh prey.