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In the moments before the disaster, the seven crewmembers of Columbia were cheerful and casual about their upcoming fiery plunge into the atmosphere. Two did not have on their gloves, and one didn't have a helmet on and was not fully strapped in, according to the report. That crewmember had last-minute tasks to perform and may not have had a chance to get seated before the accident.
The hundreds of pages indicate that while the astronauts knew how to troubleshoot problems, they may not have known how to survive them.
At 23 seconds before 9 a.m. Eastern, with Mission Control looking on unsuspectingly, Columbia lost control and pitched up violently.
Twenty-five seconds later, the shuttle was being thrown side to side because it had lost a wing and could no longer fly.
Analysis of the motions at this time shows they were not enough to render the astronauts unconscious. However, the astronauts' upper bodies were being thrown about violently because their harnesses did not automatically lock into place.
The crew lasted another 20 seconds until the crew cabin tore open and the astronauts were exposed to decompression, a near vacuum. Their lungs and body cavities would have collapsed, blood vessels burst, and they would have lost consciousness instantly. But, until then, the report said the crew probably never realized the loss of control was unrecoverable. Flight controllers knew it, but only because the shuttle had disappeared from their screens.
All seven crew members -- Cmdr. Rick Husband, pilot William McCool, Michael Anderson, David Brown, Kalpana Chawla, Laurel Clark, and Ilan Ramon -- died.
Originally posted by AnAbsoluteCreation
After reading the accounts, I felt compelled to post and give my respect to these brave people.