Overview: The new Space Shuttle program captivates America and draws a diverse, determined crop of astronauts. But safety issues arise out of public view.
Overview: To revive public interest, NASA chooses teacher Christa McAuliffe to be the first civilian on the Shuttle. Issues with the solid rocket boosters linger.
Overview: After several delays, the crew prepares for launch as engineers and NASA officials tensely discuss concerns about the O-rings and a cold weather launch.
Overview: Challenger's shocking explosion devastates the families of the crew as well as millions watching live, and an investigation puts NASA on the defensive.