Click on the above graphic for more information. . .
References:
As of: October 1, 2018
https://www.nasaspaceflight.com/2011/01/1983-1986-missions-history-space-shuttle-challenger/
https://www.britannica.com/event/Challenger-disaster#ref1103605
https://www.history.com/this-day-in-history/challenger-explodes
https://www.space.com/12085-nasa-space-shuttle-history-born.html
https://www.spacefoundation.org/news/how-space-shuttles-got-their-names
https://upload.wikimedia.org/wikipedia/commons/8/81/STS-51-L.jpg