One of those six was called the Challenger. That one was the one McAuliffe got to be on. STS-51-L, as the mission was called, was the 25th of the Space Shuttle program. It was mostly a routine mission ...

Forty years ago, the NASA space shuttle Challenger exploded 73 seconds after liftoff, killing all seven crew members. Among the seven crew members were five NASA astronauts, as well as a payload ...