It really is amazing that man was able to achieve this given the physical requirements to safely push a manned projectile to the moon, land on it, and push it back to earth where it had to survive entering earth's atmosphere. It certainly takes courage for anyone going into space because it is an inherently dangerous event where mechanical failure means death. The scientists and engineers in the Apollo era were some of the brightest we've ever had. Today, our technical learning institutions have been dumbed down for the sake of political correctness and ensuring that the least intelligent among us can get through. I am skeptical that we have the education quality and intellectual talent available now to safely try something like this again.