Want to go to space? Before launch, you've got some work to do! Find out what scuba diving, medical skills, and survival training all have to do with being an astronaut.

Who are astronauts? -- Becoming an astronaut -- Basic training -- Advanced training -- Preparing for spacewalks -- Weightlessness -- Practicing with models -- The Soyuz spacecraft -- Space gear -- Mission training -- Training with mission control -- The future of astronaut training -- A tough and rewarding job.