Titan may have formed in a giant impact between ancient Saturn moons
Recent modeling work suggests that Saturns largest moon, Titan, may be the product of a violent collision between two earlier moons rather than a relic left over from the systems formation. In this scenario, a large Proto Titan and a smaller Proto Hyperion merged in a giant impact that reshaped Titan, erased many of its impact craters, and helped set up the conditions that later produced Saturns