6. The Challenger Space Shuttle Disaster (January 28, 1986)
On January 28, 1986, the Space Shuttle Challenger disintegrated 73 seconds after liftoff, resulting in the deaths of all seven crew members, including teacher Christa McAuliffe. The tragedy halted the shuttle program and led to significant changes at NASA. For more detailed information, visit NASA’s official page on the Challenger accident.
