The Cassini-Huygens mission was a joint project between NASA, ESA, and the Italian Space Agency to study Saturn and its moons. The spacecraft launched in 1997 and arrived at Saturn in 2004, where it began orbiting and studying the planet and deploying the Huygens probe to study Titan. Major findings included determining the chemical makeup of Saturn's rings and atmosphere and surface images of Titan that showed it has liquid hydrocarbon lakes. The mission provided unprecedented data about Saturn and its moons and encouraged further exploration of the outer solar system.