First discovered in May 2005, it was confirmed #OTD in 2006 that @NASAHubble had discovered 2 more moons orbiting Pluto. Later named Nix and Hydra, @NASANewHorizons flew by in 2017, capturing photos. These tiny moons are only 20–70 mi (32–113 km) wide! https://go.nasa.gov/3Kt0Jrn #NASAhistory
Pluto's entire moon system is believed to have formed by a collision between the dwarf planet and another Kuiper Belt Object early in the history of the solar system.
