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.

Tumbling end-over-end like a dropped baton in a relay race, it's fascinating to watch Pluto's moon Nix wobble about in a state of orbital chaos. That's what scientists call it. Chaos. It means no ...

Back in the 1980’s, a now-defunct magazine called Science Digest held a contest to name Planet X — the still-undiscovered world that astronomers believed might lie out beyond Pluto. One of the best ...

Images of Pluto’s tiny moon Kerberos taken by NASA’s New Horizons spacecraft and just sent back to Earth this week complete the family portrait of Pluto’s moons. Kerberos Revealed. This image of ...

This composite image of Pluto, right, and Charon, its largest moon, showcases photos captured by NASA’s New Horizons spacecraft in July 2015. Credit: NASA / JHUAPL / SwRI Unlike how scientists believe ...

In a paper published today in Nature, a team of U.S. scientists led by Dr. S. Alan Stern of Southwest Research Institute (SwRI), concludes that two newly discovered small moons of Pluto were very ...

For decades, astronomers have tried to determine how Pluto acquired its unusually large moon Charon, which is about half the size of the dwarf planet. Now, new research suggests that Pluto and Charon ...

Pluto landed its largest moon, Charon, with a 'kiss'—overturning decades of scientific assumptions about how planetary bodies form and evolve. This is the conclusion of a new study, conducted at the ...