As a kid, I was involved in NASA's Junior Astronaut program around the time of the Challenger disaster. I will never forget the presentation where they had us h

As a kid, I was involved in NASA's Junior Astronaut program around the time of the Challenger disaster. I will never forget the presentation where they had us hold one of the heat shield tiles in our bare hands while they blasted it with a blowtorch for several minutes. It just blew my mind that such a thing was possible.