Cassini Space Probe ended in 2017 when it was de-orbited above Saturn and was destroyed in Saturn’s atmosphere. The Cassini Huygens unmanned mission was launched on October 15, 1997. The Cassini-Huygens mission was a joint venture of the European Space Agency, the Italian Space Agency, and NASA. Cassini was supposed to be viable only until 2008. However, it continued to send back valuable data about various planets and Saturn’s moons and rings. Scientists had it perform a “Grand Finale” where it threaded its way between Saturn and the planet’s inner rings. That final set of maneuvers provided maximum information regarding Saturn. Children could read some amazing Cassini facts at: Cassini Quick Facts.