On Pluto they appear to be larger — but still ... "false color" image of the planet that enhances its composition and texture. Figuring out that relationship is one of the research scientists ...

(All of the feature names on Pluto are informal ... "There is a pronounced difference in texture between the younger, frozen plains to the east and the dark, heavily cratered terrain to the ...

Scientists have discovered carbon dioxide and hydrogen peroxide on the surface of Charon, Pluto's largest moon, offering clues about the origins of the space rock and other celestial objects in ...