Charon is the largest moon of Pluto. It’s also one of the most significant objects in the Kuiper Belt, the region of the solar system beyond Neptune, filled with icy bodies. Measuring about half the size of Pluto, Charon is unique among moons because its mass is large enough that it and Pluto orbit each other in a gravitational dance, making it almost like a binary planet system. In some ways, Charon is way more interesting than Pluto. Unlike Pluto, Charon’s surface is not covered by volatile ices like methane, giving scientists a clearer view of the geological processes. Its surface, largely …