The Charon-Pluto system is a unique pairing in our solar system where the moon, Charon, and the dwarf planet, Pluto, orbit each other in a synchronous manner. This system is unique because Charon is relatively large compared to Pluto, being about half its size. In most other planet-moon systems, the moon is significantly smaller than the planet it orbits. In the Charon-Pluto system, both bodies orbit a point in space between them, known as the barycenter, which is above Pluto's surface. This mutual orbit leads to both bodies showing the same face to each other at all times. The Charon-Pluto system is often referred to as a double dwarf planet or binary system due to these characteristics.