Launched in October 1997, the ESA/NASA Cassini-Huygens mission is currently heading for Saturn. While ESA’s Huygens probe will be the first ever to land on the surface of a moon in the outer Solar System, NASA’s Cassini orbiter will continue to explore Saturn and its rings.
More info at:
http://www.esa.int/esaCP/SEMP0HHHZTD_Life_0.html