Space Shuttle Challenger

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Engineer Who Tried to Stop Challenger Launch Dies

Allan McDonald warned that O-rings could fail

(Newser) - Allan McDonald, the engineer who refused to approve the launch of the space shuttle Challenger, has gone to his grave with a clean conscience. McDonald. the engineer in charge of the booster-rocket program at NASA contractor Morton Thiokol, risked his career by resisting pressure from NASA and his bosses to...

Challenger Engineer Dies, Free of Guilt

 Challenger Engineer 
 Dies, Free of Guilt 
OBITUARY

Challenger Engineer Dies, Free of Guilt

'You helped bring my worrisome mind to ease'

(Newser) - "Next time I talk to [God], I'm gonna ask him, 'Why me,'" Bob Ebeling said in January of his nagging guilt over the Challenger disaster, which he tried to prevent as an engineer with NASA contractor Morton Thiokol. He may now get his chance. The...

Why a NASA Engineer Has Lived With 'Nagging Guilt'

Bob Ebeling tried to prevent the Challenger disaster

(Newser) - Bob Ebeling, 89, has carried a terrible burden for 30 years. He was among several engineers who tried to stop the launch of the space shuttle Challenger, saying the booster rockets' rubber seals wouldn't seal correctly in cold weather. They were unsuccessful in their challenge to contractor Morton Thiokol,...

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