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Charred remains of Apollo 1 capsule

Close-up view of the exterior of Apollo 012 Command Module at Pad 34 showing the effects of the intense heat of the flash fire that killed the prime crew of the Apollo/Saturn 204 mission. Astronauts Virgil I. Grissom, Edward H. White II, and Roger B. Chaffee lost their lives in the accidental fire.

Credits - NASA