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When NASA Ignored Engineers And Killed 7

On January 28th, 1986, the Space Shuttle Challenger exploded 73 seconds after launch, killing all seven astronauts including schoolteacher Christa McAuliffe while millions of children watched on live television. Engineers at Morton Thiokol had warned NASA the night before that cold temperatures would cause the O-rings to fail, but managers overruled them and launched anyway. Physicist Richard Feynman proved the engineering warnings were correct by dropping an O-ring in ice water during a televised hearing. This is the story of how institutional arrogance, political pressure, and "go fever" killed seven heroes in front of the world—and how NASA failed to learn the lesson when Columbia disintegrated seventeen years later.