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Challenger - O-Ring Failure Caused the Disaster

During a televised hearing on the Challenger explosion, Dr. Richard Feynman cross-examines a key NASA employee. With a simple experiment, he reveals why the shuttle failed.

This clip, from National Geographic's documentary Challenger: The Untold Story, combines historical footage and recreated scenes to explain what happened.

 

Credits

Clip from Challenger: The Untold Story online, courtesy the National Geographic Channel at YouTube.