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Key Facts In This Video
The space shuttle Columbia was the first of its kind, attached to an external fuel tank and two solid rocket boosters, the joints of which were sealed with O-rings. 02:52
The night before the Challenger disaster, engineers from Morton Thiokol recommended that NASA delay the launch until the temperature was more favorable. 07:57
The Columbia crew was told that NASA had no safety concerns about the shuttle, despite engineers repeatedly expressing reservations. 16:03
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