The first footfalls on Mars will mark a historic milestone, an enterprise that requires human tenacity matched with technology to anchor ourselves on….

Mars is there, waiting to be reached..

Mars has a bit of air pressure; maybe we can build up that atmosphere to be a bit more accommodating to humans..

Mars, we know, was once wet and warm. Was it home to life? And what can living and learning to work on its rust-colored surface teach us about the fu….

I poured the wine into the chalice our church had given me. In the one-sixth gravity of the moon the wine curled slowly and gracefully up the side of….

Space tourism is a logical outgrowth of the adventure tourist market..

I'm not in favor of just taking short-term isolated situations and depleting our resources to keep our climate just the way it is today..

Unfortunately, pioneers will always pave the way with sacrifices..

We must still think of ourselves as pioneers to understand the importance of space..

The g-forces increased and I wasn't able to continue to hold the camera against the window, so I had to lay it back against my chest, but still conti….

Absolutely the United States should lead in space, for the survival of the United States. It's inspiring for the next generation. If we lose leadersh….

When we set out to land people on the surface of Mars, I think we should as a nation, as a world, commit ourselves to supporting a growing settlement….

The beauty of Hawaii probably surpasses other places. I like the Big Island and the two mountains, Mauna Loa and Mauna Kea, where you can look out at….

I don't watch 'American Idol,' but I wouldn't call it 'undignified.'.

As a student, I wrote English reports on science fiction..

Heavy lifting doesn't need to be heavy spending if we do the job right..

There's a tremendously satisfying freedom associated with weightlessness. It's challenging in the absence of traction or leverage, and it requires th….

I know: If you're looking down at Earth, you're looking through an atmosphere that has a bit of haze in many places and not just occasional clouds..

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've been to the Titanic in a yellow submarine and the North Pole in a Russian nuclear ice breaker..

The way I see it, commercial interests should manage a lunar base while NASA gets on with the really important task of flying to Mars..