Pascal Lee is a true pioneer of Mars exploration.

Astronauts working for the government will always need to be either pilots or mission specialists. Those who want to be pilots should have military experience - ideally, a test pilot background.

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

The final frontier may be human relationships, one person to another.

I inherited depression from my mother's side of the family. Her father committed suicide. She committed suicide the year before I went to the moon.

I think we need to move to the moons of Mars and learn how to control robots that are on the surface. It's not the impatient way of getting there, but Mars has been there a long time.

The much-hyped Ares 1-X was much ado about nothing.