The evolution of the space shuttle program
The Challenger accident
Columbia's final flight
Accident analysis
Other factors considered
Challenger accident and its aftermath
NASA human space flight culture
When to replace the space shuttle?
Decision making at NASA
Accident's organizational causes
History as cause: Columbia and Challenger
Implications for the future of human space flight
Crew escape and survival
Brittle fracture of A-286 Bolts
Solid rocket booster external tank attachment ring.