Pluto has one very large moon that is almost half the planet’s size. Discovered in 1978, it was named Charon after the demon who ferried souls to the underworld in Greek mythology. (Pluto is ...

What processes during the formation of Pluto's largest moon, Charon, potentially led to it having cryovolcanism, and even an ...

The Pluto system consists of four tiny satellites — Nix, Hydra, Kerberos and Styx — orbiting a "binary planet" comprised of Pluto and its largest moon Charon, which, at 750 miles (1,207 ...

Pluto’s strange, small moons were discovered quite recently. Nix and Hydra were first found in 2005, followed by Kerberos in 2011 and Styx in 2012.

If you lived on one of Pluto's moons Nix or Hydra, you'd have a hard time setting your alarm clock. That's because you could not know for sure when, or even in which direction, the sun would rise.

As NASA's New Horizons probe closes in on Pluto, the Hubble Space telescope has been scouting its retinue of five known moons, discovering that at least two are tumbling chaotically in the complex ...

The orbits of Pluto's four smallest moons are even more chaotic than scientists had expected, according to new results from the New Horizons mission, which made a close flyby of Pluto in July.

Scientists unveiled today that chaos reigns supreme at Pluto. Two of Pluto’s moons — Nix and Hydra — are shaped like American footballs and tumble around chaotically in orbit of both Pluto ...

If Charon hit Pluto at a relatively sedate speed of about 2,000 miles per hour — 10 times as slow as the Earth’s moon-forming impact — the two would have remained in contact for about 10 ...

The Vote to Name Pluto's New Moons. Published Mar 05, 2013 at 12:00 AM EST Updated Feb 09, 2016 at 10:16 PM EST.