Quaoar's moon orbits surprisingly close

Far beyond Neptune in the Kuiper Belt, the dwarf planet Quaoar hosts a tiny moon named Weywot. Discovered in 2006, Weywot orbits Quaoar at an unusually close distance, suggesting it formed from a massive collision billions of years ago, much like Earth's Moon. This binary-like setup is common in the Kuiper Belt, offering clues about the solar system's early formation. Weywot's density also implies it shares Quaoar's icy composition, hinting at the building blocks of planets.