The four segments of this video show what it takes to put astronauts into space and to keep them there as they live and work.

The Space Shuttle — Meet scientists and explorers who ride rockets into space.

Support Staff — Behind every astronaut, there's a team making sure each voyage is safe and successful.

Zero Gravity — Managing the effects of low gravity on the body is crucial for astronauts working in space.

Living in Space — Dr. Sally Ride, America's first woman in space, explains how the new space station will operate.

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