Hydra is the third moon of the planet Pluto.
- It is the farthest moon from Pluto.
- It is most likely slightly larger than Nix, because it appears brighter.
- It was named after a monster in Greek and Roman mythology.
- It was discovered in 2005 by the Hubble Space Telescope, along with Nix.
|Moons of Pluto|
|Charon • Nix • Hydra • Kerberos • Styx|