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
Acrisius her in the form of a golden shower (some accounts say it is her uncle, Proetus, who impregnates her). Danaë becomes pregnant with Perseus. Acrisius puts the child and Danaë in a chest and throws it into the sea. Zeus asks Poseidon to calm the water; he does and Danaë and Perseus survive, washing up on the island of Seriphos. A fisherman named Dictys, brother of King Polydectes, finds the pair and takes care of them. Perseus grows up to be a hero, killing Medusa and rescuing Andromeda. Perseus and Danaë return to Argos with Andromeda, but King Acrisius has