An curved arrow pointing right. NASA's Cassini spacecraft plunged into Saturn's atmosphere on September 15, marking an end to its mission to study the ringed planet and its many, mysterious moons.

Twenty years ago, a rocket launched from Cape Canaveral in Florida on a billion mile trek to Saturn. The photos the probe took revealed some astonishing things about Saturn, its rings and moons.

An curved arrow pointing right. NASA's Cassini spacecraft is on a daredevil mission that is taking it closer to the planet Saturn than it has been in over a decade. In December, the spacecraft ...