Hydra (moon) the Hydra, the nine-headed serpent that battled Heracles in Greek mythology. The nine heads of Hydra are a reference to Pluto's tenure as the ninth planet; its initial, "H", refers to the Hubble Telescope, which discovered Hydra and, together with Nix, to the "New Horizons" mission whose safe passage was the motivation for taking the Hubble images. Hydra orbits the barycenter of the system in the same plane as Charon and Nix, at a distance of about 65,000 km. Its eccentricity of 0.0059 is small, but significantly non-zero, and the largest of those of Pluto's small moons (slightly larger than
Greek mythology in popular culture new character of this game is also focused in Greek Mythology such as Zeus, Athena, Perseus and Ares. Corporations have used images and concepts from Greek mythology in their logos and in specific advertisements. The wine Semeli is named after Semele, who was the mother of the god of wine Dionysus, drawing on the associations to give the product credibility. The sports apparel company Nike, Inc. is named after the Greek goddess of "victory". TriStar Pictures, "Readers Digest" and Mobil Oil have used the Pegasus as their corporate logos. In psychoanalytic theory, the term Oedipus complex, coined by Sigmund Freud,