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40 years ago, classified Shuttle mission foreshadowed Challenger's fatal flaw
It has been 40 years since NASA launched the first dedicated Department of Defense Space Shuttle mission, after which engineers spotted O-ring seal defficiencies that would doom Challenger a year ...
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The 8 'lost lessons' Challenger astronaut Christa McAuliffe was supposed to teach in space
Thirty years ago on January 28, seven astronauts were killed when the Challenger space shuttle exploded just 73 seconds after launch. One of those seven astronauts was Christa McAuliffe.