At 50 % the size of Pluto, Charon is the largest of Pluto's moons and the largest recognised satellite relative to its parent system. The moon is so large in comparison with Pluto that Pluto and Charon are occasionally called a double World procedure. Giant-influence hypothesis. In Wikipedia. By NASA/JPL-Caltech, https://bestmoons06937.59bloggers.com/35155999/bestmoons-no-further-a-mystery