Trips to Mars, the Moon, even orbit, will require that we provide astrotourists with as many comforts from home as possible, including paying each other.

Many say exploration is part of our destiny, but it's actually our duty to future generations and their quest to ensure the survival of the human species.

A mind concerned about danger is a clouded mind. It's paralyzing.

Monumental achievements by humanity should be done by major organizations as much together as possible.

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.

My favourite thing to do on this planet is to scuba dive.

Astronauts are not superhuman. They lead ordinary lives and have varied personalities.