Pluto may have been demoted to non-planet status, but it still commands a court of five moons, as is fitting for the king of darkness; after all, Pluto is the Roman equivalent of the Greek God Hades.

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. A composite of enhanced ...

For decades, scientists have theorized that Pluto's unusually large moon Charon formed through a process similar to Earth's moon—a massive collision followed by the stretching and deformation of fluid ...

Pluto and its largest moon Charon have a rare tidal locking relationship, constantly showing the same faces to each other. This, combined with unique geological features like polygonal ice cells, ...

Clyde Tombaugh, who was born on this day in 1906, grew up on a farm in Kansas and was captivated by sights of the moon and ...