Pluto has a fourth moon. When the fuck did this happen? When I was a kid, Pluto was still a planet, and it had one moon, Charon. But apparently the Hubble Space Telescope discovered two more in 2005: Nix and Hydra. And they just discovered a fourth moon on July 20th. Spoiler Thanks for killing my childhood, science. FOCUS: Name Pluto's fourth moon. Bonus points for funny or clever suggestions, or ones from Greek mythology.