World & Nation
Investigative teams from the presidential commission on the Challenger disaster privately interviewed key witnesses in three cities Friday, trying to reconstruct a crucial engineering debate that led the manufacturer of the space shuttle’s rockets to withdraw its opposition to the launching.
Feb. 22, 1986
Obituaries
He developed sentinel lymph node evaluation, which saves the U.S. healthcare system more than $3.8 billion per year in the treatment of melanoma and breast cancer, as well as preventing countless unnecessary surgeries.
Jan. 17, 2014
Science & Medicine
June 10, 1986
In recommending that the space shuttle be launched, senior officials of the manufacturer of Challenger’s solid rocket boosters acknowledged that cold temperatures could hamper performance of crucial rocket seals at liftoff but asserted that backup seals should prevent a dangerous leak of propellant, NASA documents showed Thursday.
Feb. 21, 1986
Officials of the National Aeronautics and Space Administration and executives and engineers of Morton Thiokol Inc., which built the space shuttle’s solid rocket boosters, spent much of the 24 hours before the Jan. 28 launching debating whether cold weather would interfere with the functioning of the boosters’ all-important O-rings.
Business
An executive of Morton Thiokol Inc. told the chairman of the Senate’s space subcommittee Tuesday that the company had no intention of punishment when it transferred two aerospace engineers who opposed the fatal launch of the space shuttle Challenger last January.
May 21, 1986
Rocket engineer Allan J.
May 31, 1986
Entertainment & Arts
Developer Donald Trump did not authorize the use of his name in an advertisement appearing Friday in support of “shock TV” show host Morton Downey Jr., according to Trump’s secretary and spokeswoman, Norma Foerderer.
May 8, 1989
The John Wayne Cancer Institute will honor its founding medical director and president, Dr.
March 24, 1994
In testimony charged with emotion, engineers for the firm that builds space shuttle rockets said Tuesday that they waged a desperate, losing struggle during the night before the ill-fated Challenger flight to persuade space agency officials and their own supervisors that launching in the bitter cold weather would risk catastrophe.
Feb. 26, 1986