Gods demigods and men Greek mythology

Greek mythology appeared well before the Christian era. Primitive men left drawings and figures in caves and caves, were carriages of fire and birds of metal, these represented to them gods who came from the heavens with infinite and immortal powers. In the myth the gods interacted with the first men and generated the demigods, heroes like Hercules, Achilles, Perseus and many others. The Greeks believed that their abode was Mount Olympus, where its peak touches the heavens.Belief in the gods became religion, where the gods were worshiped and worshiped in temples of every city in Greece and Rome. Zeus, Poseidon, Hades, Athena, Apollo, Hermes, Aphrodite, Eros, Hera and many others.Sculptures, paintings, poems by great artists were made in homage to their favorite gods, stories of their adventures and feats. Loves for mortals and immortal tales that have influenced mankind in all generations. Were they the gods astronauts who in the past had visited us in Erich Von Dniken's famous book?