(EDIT: And there's a region of Pluto itself called "Cthuhlu". I'm so glad nerds, not jocks, dominate space exploration.)
Photo of Pluto's moon Charon from NASA. New York Times caption:
"A new image of Charon, Pluto’s largest moon. The moon has a dark patch, informally called Mordor, at its north pole. The image was taken late Monday from a distance of 289,000 miles."
