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 "Lost" used Greek mythology primarily in its online Lost Experience. During its six-season run, the television series "" is set in a fantasy world "dominated by Greek gods and mythological creatures", but it also "plays with Greek legends" re-writing the historical stories. In the series, the god Ares (played by Kevin Tod Smith) makes several appearances attempting to lure Xena back to a life of spreading chaos and destruction. Amazons, prior to their appearance in American Hollywood films where they have been presented in "swimsuit-style costume without armor" and "Western lingerie combined with various styles of 'tough', male" clothing, had