NASA documentary detailing the events surrounding the loss of OV099, Space Shuttle Challenger, shortly after the launch of the 25th flight of the Space Transportation System, Mission STS51L, on 28 January, 1986, and the subsequent investigation into the loss of the vehicle and its crew of seven. The investigation shows that the Solid Rocket Booster field joints were of an insufficiently faulttolerant design and when the vehicle was launched at belownormal temperatures, hot exhaust gasses leaked on ignition, damaging the integrity of the field joint, leading to a breach in the external tank and destruction of the orbiter.

Video courtesy: NASA

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