My own American Dream was to serve my country as best I could and make a difference in America - and in the world.

Returning to the Moon with NASA astronauts is not the best usage of our resources. Because OUR resources should be directed to outward, beyond-the-moon, to establishing habitation and laboratories on the surface of Mars that can be built, assembled, from the close-by moons of Mars.

Walking around on the moon was significantly easier than we'd thought it would be. There weren't any balance problems, so you weren't tumbling over.

I think humans will reach Mars, and I would like to see it happen in my lifetime.

Instead of planning the retirement of the Space Shuttle program, America should be preparing the shuttles for their next step in space: evolving, not shutting them down and laying off thousands of people.

At the core of the risk-free society is a self-indulgent failure of nerve.

I'm in favor of changing the destination of humans. There are a lot of manned missions that can be done, but not in the direction of the moon.