Gorgon these myths relate that Perseus was armed with a scythe from Hermes and a mirror (or a shield) from Athena. Perseus could safely cut off Medusa's head without turning to stone by looking only at her reflection in the shield. From the blood that spurted from her neck and falling into the sea, sprang Pegasus and Chrysaor, her sons by Poseidon. Other sources say that each drop of blood became a snake. Perseus is said by some to have given the head, which retained the power of turning into stone all who looked upon it, to Athena. She then placed
Andromeda (constellation) daughter to Cetus. She was chained to a rock by the sea but was saved by the hero Perseus, who in one version of the story used the head of Medusa to turn the monster into stone; in another version, by the Roman poet Ovid in his Metamorphoses, Perseus slew the monster with his diamond sword. Perseus and Andromeda then married; the myth recounts that the couple had nine children together – seven sons and two daughters – and founded Mycenae and its Persideae dynasty. After Andromeda's death Athena placed her in the sky as a constellation, to honor her.