Look at a picture of the Apollo 11 launch and you'll probably notice the rocket's pointed tip and the fire coming from the five giant engines in the first stage of the 36-story-tall Saturn V rocket.

During a routine ground test in January 1967, astronauts Gus Grissom, Ed White, and Roger Chaffee were sealed inside their Apollo command module when a sudden fire erupted inside the oxygen-filled ...

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