Click HERE for information on Simple Machines, read pages 85-91.
Here are some follow-up articles about the Cassini probe from the New York Times:
After a 20 year mission dedicated to studying Saturn and its moons, NASA’s Cassini probe will plunge into Saturn’s atmosphere and be destroyed as a planetary protection measure.
Article: Introducing Saturn
Images from Cassini’s Mission:
NASA e-Book: The Saturn System Through the Eyes of Cassini