NASA
Nasa: Landing on Mystery Stuff
At this online lesson plan read about the exciting Comet Nucleus Sample Return Mission. Understand comets and then go and do the word search.
PBS
Nova: Doomsday Asteroid Hale Bopp & Hyakutake
NOVA provides a report on comet Hale-Bopp and comet Hyakutake. Content includes discovery and observational information.