NASA, Challenger and space shuttle
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Forty years after the space shuttle Challenger disintegrated shortly after liftoff, the disaster remains one of the most consequential tragedies in U.S. spaceflight history.
Forty years later, the memories of the Challenger explosion resonate deeply with students and teachers who witnessed it.
NASA's Space Shuttle Program, which ran from 1981 to 2011, was a complex and ambitious project that pushed the boundaries of ...
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