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 ...

Why was Pluto reclassified as a dwarf planet? One might think that it’s purely a matter of size. Mercury, the smallest of the ...

The mineral water, reputed to aid in relaxation and digestion, was said to cure everything from diabetes to skin problems. For a time it was even bottled and sold as Pluto Water. Celebrities came ...

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 ...