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The STS-51-L mission, aboard the space shuttle Challenger, tragically ended in an explosion 73 seconds after liftoff on January 28, 1986. All seven astronauts on board perished. Among the crew was Christa McAuliffe, a teacher selected to be the first private citizen in space, whose presence highlighted the mission's goal of inspiring students. The disaster, witnessed live on television, led to a significant halt in space shuttle missions for over two years and prompted a thorough investigation into NASA's safety protocols and management. The cause was traced to a faulty O-ring seal in a solid rocket booster, exacerbated by cold weather conditions.12

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