The History of the Moon

Most moons in the solar system do not have nice circular orbits that are orbiting with the planets. In fact, most of them have elliptical orbits that have weird tilts. And that's suggested a completely different history for how that moon formed. But we think that most of the ones with skewed orbits that with tilted orbits that precess are probably captured objects,. things that came nearby and were grabbed onto by the gravity of that planet.