We collectively have a special place in our heart for the manned space flight program - Apollo nostalgia is one element, but that is only part of it. American culture worships explorers - look at the fame of Lewis and Clark, for example. The American people want to think of themselves as supporting exploration.

Having a diverse suite of U.S.-manned spaceflight systems to access space is inherently robust.

Manned spaceflight has lost its glamour - understandably so, because it hardly seems inspiring, 40 years after Apollo, for astronauts merely to circle the Earth in the space shuttle and the International Space Station.

I don't think it's any coincidence that I lost my religious faith and 'manned up' in the same year. I was described somewhere as a lapsed Catholic, which is funny because I'm not going back! I want to achieve things rather than live life in an animalistic way.

An end of something means the beginning of something else, and I don't think that something else is going to be the death of the manned space program.

I don't think it's any coincidence that I lost my religious faith and 'manned up' in the same year. I was described somewhere as a lapsed Catholic which is funny because I'm not going back! I want to achieve things rather than live life in an animalistic way.