Pegasides Pegasides Pegasides () were nymphs of Greek mythology connected with wells and springs, specifically those that the mythical horse Pegasus created by striking the ground with his hooves. According to Greek mythological tradition the winged horse Pegasus was the son of Poseidon, sea and river god of the Greeks, equivalent to the Roman Neptune. The hero Bellerophon needed the untamed Pegasus to help him defeat the monster Chimera. Hence, while Pegasus was drinking at the spring Pirene in Corinth, Bellerophon caught him. Pegasus, startled, struck a rock with his hoof, creating the spring Hippocrene on Mount Helicon. The name Pegasides
Moons of Neptune Moons of Neptune Neptune has 14 known moons, which are named for minor water deities in Greek mythology. By far the largest of them is Triton, discovered by William Lassell on October 10, 1846, 17 days after the discovery of Neptune itself; over a century passed before the discovery of the second natural satellite, Nereid. Neptune's outermost moon Neso, which has an orbital period of about 26 Julian years, orbits further from its planet than any other moon in the Solar System. Triton is unique among moons of planetary mass in that its orbit is retrograde to Neptune's rotation and