Discovered in 1978, Charon is the largest of Pluto's moons, but it is more than just a satellite. Charon is more than half as big as Pluto, and because Pluto and Charon actually revolve around each other, they are sometimes called a "Double Planet". Scientists have nicknamed Charon's dark cap as "Mordor" after a part of "Middle-Earth" in Tolkien's "The Lord of the Rings". Charon's orbit is "synchronous" with its rotation, so its same side always faces Pluto. Pluto's other moons are named Styx, Nyx, Kerberos and Hydra.
Held together by two strong, interior magnets held within a safety pouch between the shell and stuffing, the Pluto and Charon Celestial Buddies are a perfect pair. Pluto measures approximately 5" and Charon 4". The Celestial Buddies are recommended for ages 3 and up.