From 60 Minutes.

On January 28, 1986, NASA’s Space Shuttle Challenger exploded and all seven astronauts on board were killed, including teacher Christa McAuliffe. Ten years later, Lesley Stahl spoke with engineers who told 60 Minutes they tried to stop the launch.

"60 Minutes" is the most successful television broadcast in history. Offering hard-hitting investigative reports, interviews, feature segments and profiles of people in the news, the broadcast began in 1968 and is still a hit, over 50 seasons later, regularly making Nielsen’s Top 10.

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