Challenger Space Shuttle tragedy. Every year I do a tribute at our local library for the three major disasters that NASA has faced. Another anniversary is coming up this weekend, with the Columbia tragedy and one of the Apollo tragedies on the launch pad. We will not forget those men and women who put their lives on the line to explore. How sad that most people in today's generation have no idea that without the space program , they would not have the internet and their stupid ass cell phones. And the list doesn't stop there!