For the past 13 years, the Cassini probe has been exploring the system of Saturn, but Cassini's historic mission is about come to a dramatic end. With its fuel dwindling, NASA decided to crash the seven metre spacecraft into the ringed planet's atmosphere, lest it smash into one of Saturn's moons and contaminate a scientifically pristine site with something Cassini might have brought from Earth. Steve and Ben examine the Cassini probe, its accomplishments, and the future of exploring space through probes.