I was only seven years old when this happened but, I still remember how sad I was at the loss of some of my heroes. Growing up in the sixties, the NASA Mercury, Gemini and Apollo astronauts inspired my lifelong love of science. They risked their lives on every mission to expand the boundaries of science. His blog post talks about it better than I can.
FYI – Per ardua ad astra means, Through difficulty to the stars.