Naming of moons underworld, and Nix (a respelling of Nyx), mother of Charon, is the goddess of darkness and the night. Kerberos is a giant three-headed dog who guards the entrance to the underworld. The fifth moon is named for the river Styx that forms the boundary between the worlds of the living and the dead. The name of Eris's moon Dysnomia was suggested by its discoverer Michael E. Brown, who also suggested the name of the dwarf planet. The name has two meanings: in mythology Dysnomia (lawlessness) is the daughter of Eris (chaos). However, the name is also an intentional reference to
Greek underworld and achieved Elysium all three times, then they were sent to the Isles of the Blessed to live in eternal paradise. Hades (Aides, Aidoneus, or Haidês), the eldest son of the Titans Cronus and Rhea; brother of Zeus, Poseidon, Hera, Demeter, and Hestia, is the Greek god of the underworld. When the three brothers divided the world between themselves, Zeus received the heavens, Poseidon the sea, and Hades the underworld; the earth itself was divided between the three. Therefore, while Hades' responsibility was in the underworld, he was allowed to have power on earth as well. However, Hades himself is