Description: (American Astronaut Who was Killed on the Space Shuttle 'Challenger' on Mission STS-51-L)
Christa McAuliffe was an American astronaut and teacher who died while serving as a payload specialist on board Space Shuttle Challenger, which exploded during STS-51-L. McAuliffe was all set to become the first teacher in space as she was part of the NASA Teacher in Space Project. In 2004, she was posthumously honored with the Congressional Space Medal of Honor.