And that they were able to pick up from Earth, it turns out. And then Cassini used it to lock onto Huygens. You can do one critical piece of science with the carrier signal alone and that is ...

For the last 13 years, NASA's Cassini spacecraft has spied on Saturn and its many moons. Turns out, this region of space could hold the greatest secrets of our solar system. Here are 5 of the most ...

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.