Report of the PRESIDENTIAL COMMISSION on the Space Shuttle Challenger Accident

Above, Shuttle 51-L on Kennedy Space Center Pad 39B in the early morning of launch day. Temperatures were well below freezing, as indicated by the lower left photo, which shows thick ice in a water trough despite the use of an anti-freeze solution.

Above, Shuttle 51-L on Kennedy Space Center Pad 39B in the early morning of launch day. Temperatures were well below freezing, as indicated by the lower left photo, which shows thick ice in a water trough despite the use of an anti-freeze solution.

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