It has been 40 years since NASA launched the first dedicated Department of Defense Space Shuttle mission, after which engineers spotted O-ring seal defficiencies that would doom Challenger a year ...

In 1986 he somewhat reluctantly agreed to join the Rogers Commission, whose task was to investigate the Challenger disaster. The space shuttle ... disaster was that O-rings on one of the sections ...

Lucas, a NASA rocket scientist who helped shape the nation's first satellite as well as its first space ... about the O-rings, he also suggested that disasters like the Challenger tragedy ...