Pluto's surface, fitting for a world whose surface shivers at a cryogenic -364 F (-220 C), is frozen solid. But beneath that nitrogen ice may lie a subsurface ocean of liquid water. A recent study ...

Using data collected by the spacecraft’s LEISA spectral imager, researchers are uncovering the true nature of Nix’s surface coarse, pure water ice that behaves like rock due to the extreme cold of ...