Planets, moons and other celestial bodies are named according to rules established by the International Astronomical Union (IAU). Pluto did not have any rules for naming surface features because, ...

No more pussyfooting around. It's official: Pluto has 14 new place names. Most we suspected would be there, but a few are new. Pluto's "heart" now bears the name of American astronomer Clyde Tombaugh, ...

The New Horizons flyby of Pluto and its satellites returned a scientific treasure trove of information about these distant and surprisingly complex worlds, showing a vast nitrogen glacier as well as ...

Just as we were poised to expand our puny Solar System with more modern orbiting deities, the great astronomer’s carving knife came slicing through. It was only a few weeks earlier that the ...