Challenger Explosion (Nasa) via CNN

I remember this day but did not have access to a television at the time and did not see this happen.

This is a CNN video of the explosion:

Challenger Explosion


Investigation of Challenger Explosion

Here is Richard Feynman during the investigation:

Richard Faynman


Challenger Explosion -- Wikipedia

See what Donald Kutyna says in the last sentence of the last paragraph in the section of "O-ring concerns".

Click on link below:

Wikipedia Challenger