Pegasus is one of the best known mythological creatures in Greek mythology. He is a winged divine stallion usually depicted as pure white in colour. He was sired by Poseidon, in his role as horse-god, and foaled by the Gorgon Medusa. He was the brother of Chrysaor, born at a single birthing when his mother was decapitated by Perseus. Greco-Roman poets write about his ascent to heaven after his birth and his obeisance to Zeus, king of the gods, who instructed him to bring lightning and thunder from Olympus. Friend of the Muses, Pegasus is the creator of Hippocrene, the fountain on Mt. Helicon. He was captured by the Greek hero Bellerophon near the fountain Peirene with the help of Athena and Poseidon. Pegasus allows the hero to ride him to defeat a monster, the Chimera, before realizing many other exploits. His rider, however, falls off his back trying to reach Mount Olympus. Zeus transformed him into the constellation Pegasus and placed him up in the sky.
source: wikipedia , better article in the France wikipedia
Ο Πήγασος ήταν το φτερωτό άλογο της Ελληνικής Μυθολογίας, για τον οποίο, αν και ο Όμηρος δεν τον αναφέρει, υπάρχουν οι ακόλουθες παραδόσεις:
Τελικά οι θεοί πρόσφεραν στον Πήγασο μια αιώνια θέση στον ουρανό δημιουργώντας τον Αστερισμό του Πήγασου.
Πολλές υπήρξαν οι παραστάσεις του Πήγασου κυρίως σε νομίσματα και δακτυλιόλιθους κατά τους Μυκηναϊκούς χρόνους μέχρι και τους τελευταίους Ρωμαϊκούς ως άλογο με πτέρυγες. Εκτός από το βάθρο του άρματος του Ποσειδώνα και της Αμφιτρίτης, στην Κόρινθο, που από το στέρνο και κάτω απεικονίζεται ως θαλάσσιο κήτος.
Πηγή : wikipedia