Perseus (constellation) may be derived from the Babylonian Old Man (MUL.SHU.GI) constellation, then associated with East in the MUL.APINan astronomical compilation dating to around 1000 BCE. In Greek mythology, Perseus was the son of Danaë, who was sent by King Polydectes to bring the head of Medusa the Gorgon — whose visage caused all who gazed upon her to turn to stone. Perseus slew Medusa in her sleep, and Pegasus and Chrysaor appeared from her body. Perseus continued to the realm of Cepheus whose daughter Andromeda was to be sacrificed to Cetus the sea monster. Perseus rescued Andromeda from the monster by
Polydectes not return to the island without it. Perseus slew Medusa, supposedly using his shield as a mirror to avoid looking at her. When Perseus returned to Seriphos with the Gorgon's head, he found that, in his absence, his mother was threatened and abused (or even raped) by Polydectes, and had to seek refuge in a temple. Perseus was outraged and strode into the throne room where Polydectes and other nobles were convening. Polydectes was surprised that the hero was still alive and refused to believe Perseus had accomplished the deed he was sent out to do. Perseus professed that he