How many people were aboard the challenger in 1986?

The Space Shuttle Challenger disaster occurred on January 28, 1986, and there were seven crew members aboard at the time of the tragic accident. The mission was STS-51-L, and the crew included Christa McAuliffe, who was a civilian school teacher, making her the first private citizen selected to go to space. The mission ended shortly after launch when the shuttle disintegrated, leading to the loss of all crew members.