(Written By Frank Powell) I was in an engineering class the first time I watched the tragic explosion of the Space Shuttle Challenger. Even though I wasn’t alive when it happened, I caught a glimpse of the horror thousands must have felt as the events unfolded. And, the first question everyone wanted to know was, “What happened?”

After months of investigation, here’s what the Rogers Commission (the group commissioned to investigate the explosion) discovered: An o-ring seal in the right solid rocket booster failed at take-off. I won’t bore you with the details, but an o-ring is a small device relative to the size of a space shuttle. Very small. READ MORE