ahlam1399
03-22-2016, 05:24 AM
Bob Ebeling was one of five booster rocket engineers at a NASA contractor who tried to stop the 1986 launch of the space shuttle Challenger, which exploded 73 seconds into its flight. He was 89.
أكثر... (http://www.npr.org/sections/thetwo-way/2016/03/21/470870426/challenger-engineer-who-warned-of-shuttle-disaster-dies?utm_medium=RSS&utm_campaign=news)
أكثر... (http://www.npr.org/sections/thetwo-way/2016/03/21/470870426/challenger-engineer-who-warned-of-shuttle-disaster-dies?utm_medium=RSS&utm_campaign=news)