https://www.history.com/news/5-things-you-might-not-know-about-the-challenger-shuttle-disaster

http://www.nbcnews.com/id/11031097/ns/technology_and_science-space/t/myths-about-challenger-shuttle-disaster/#.XlRJZmj7TIU

https://www.youtube.com/watch?v=j4JOjcDFtBE

https://www.space.com/10677-challenger-tragedy-overview.html

https://www.space.com/18084-space-shuttle-challenger.html

https://www.space.com/31732-space-shuttle-challenger-disaster-explained-infographic.html

https://www.youtube.com/watch?v=0XqlOxvkB2o