|Artist's impression of Charon (foreground) and Pluto (background). The plumes and
brighter spots depicted at left on Charon are thought to be created as water (with
some ammonia hydrate mixed in) "erupts" from deep beneath the surface.
Credit: Gemini Observatory. Composite image includes Pluto and Charon models
(enhanced), courtesy of Software Bisque. www.seeker3d.com, with plumes and ice
fields added by Mark C. Petersen, Loch Ness Productions. Star field from DigitalSky
2, courtesy Sky-Skan, Inc.