Space Shuttle mission STS-51-L was to be the 25th mission of the program. What made it special was to be lessons taught from space by a school teacher. On Jan. 28, 1986, 73 seconds after liftoff of the Space Shuttle Challenger, the crew and vehicle were lost. The commander for the flight was veteran astronaut Dick Scobee, an experienced test pilot who exhibited humility and admiration for his colleagues.