Nephi - Roger Boisjoly, a Nasa contractor who repeatedly voiced concerns about the space shuttle Challenger before it exploded, has died. He was 73. Boisjoly died of cancer on January 6 in southwest ...

While The Who's Roger Daltrey still has what it takes to perform, the 81-year-old rock legend is dealing with some physical changes that are out of his control. While performing alongside his ...

Roger Boisjoly was a rocket engineer for a company that NASA was in a contract with. During their work on the Challenger, Boijoly noticed that the booster rockets on the ship had rubber seals that ...

The cold war was a time of true intrepid space exploration, with the world’s two largest superpowers going head to head to push the boundaries of what was possible. Both the USA and the Soviet ...

(BOB PEARSON/AFP via Getty Images) In fact, one employee at NASA contractor Morton Thiokol raised the alarm long before the Challenger crew boarded the doomed spacecraft. Advert Roger Boisjoly ...

Challenger and the explosion of the Chernobyl ... The lead protagonist was Roger Boisjoly, an emotional rocket engineer whose failure to prevent the launch would haunt him for the rest of his ...

Roger Boisjoly, a staff engineer with a mechanical ... The impact on the nation and NASA in particular of the Challenger disaster is hard to understate. Not only had it lost some of the most ...

And there would be one more casualty of the Challenger disaster. Roger Boisjoly never forgave himself for not doing more to stop the launch. He was profoundly distressed by suggestions that ...

By January 1985, a year before the Challenger explosion, Roger Boisjoly, a Thiokol engineer who “knew the O-rings better than anyone,” was telling his colleagues that low temperatures were ...

Roger Boisjoly, an engineer, warned about the poorly made joint sealing rubber gaskets, which eventually proved the Challenger’s undoing. He was told by his superiors “to keep the data to ...