Charon is large in size relative to Pluto, and is locked in a tight orbit with the dwarf planet. A new simulation suggests how it ended up there.

“Because Pluto is rotating rapidly prior to the collision, and because Charon lies mostly outside of their corotation zone, ...

Scientists have observed X-rays emanating from a white dwarf orbiting a supermassive black hole in a galaxy near the Milky Way. The study notes the stability of the dwarf's orbit, despite its ...

Because Charon is just over half the size of Pluto, the two bodies then began orbiting each other in a cosmic dance in the Kuiper Belt beyond Neptune’s orbit. However, a recent study in Nature ...