The Space Shuttle has proven itself one of the most flexible space vehicles ever flown. Most assuredly, the range of possibilities for operations in orbit expanded dramatically with the launch of Columbia in 1981. Through the end of the program in 2011 there will be 135 Space Shuttle missions, including the Challenger and Columbia accidents, […]

via The Space Shuttle and the Expansion of the Astronaut Cadre in Space — Roger Launius’s Blog

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