I want to keep on the move, keep stimulated and challenged.

Mars is the symbolic and totally stimulating next objective that could so dominate the next century's exploration efforts. From Mars, the resources of all the asteroids will become readily available.

When you're in a spacecraft, you need to know what things you can touch and what things you shouldn't touch!

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

My first inclination is to be a bit skeptical about the claims that human-produced carbon dioxide is the direct contributor to global warming.

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

This has been far more than three men on a mission to the Moon; more still than the efforts of a government and industry team; more, even, than the efforts of one nation. We feel this stands as a symbol of the insatiable curiosity of all mankind to explore the unknown.