Explores the International Space Station, including its construction and the missions required to build it, living and working aboard the ISS, and its importance as the future of the space program.
Discusses what American alligators are, why they are endangered, what their current status is, and what is being done to help them. Includes Internet links to Web sites related to American alligators.
Relates events of the April, 1970, flight of Apollo 13, the third mission to the Moon, which was aborted after an explosion critically damaged the command module and nearly claimed the lives of the three astronauts aboard.
Describes the events surrounding the explosion of the Challenger shuttle in 1986, the investigation of this disaster, and the seven astronauts who died. Includes Internet links to related Web sites, source documents, and photographs.