Perhaps the two greatest moments of my life were standing on the moon and being outside of the room when my granddaughter was born! We tend not to remember the worst.

We leave as we came, and, God willing, as we shall return, with peace and hope for all mankind.

I know the stars are my home. I learned about them, needed them for survival in terms of navigation. I know where I am when I look up at the sky. I know where I am when I look up at the Moon; it's not just some abstract romantic idea, it's something very real to me. See, I've expanded my home.

Mom was always doing something for somebody. She came from a Czech background, one that made her a devout Catholic and gave her a strong belief in the family.

When you head on out to the Moon, in very short order, and you get a chance to look back at the Earth, that horizon slowly curves around in upon himself, and all of sudden you're looking at something that is very strange, but yet is very, very familiar, because you're beginning to see the Earth evolve.

We went into darkness after being in daylight the whole time on the way to the Moon. And then we went into darkness. And we're in the shadow... of the Moon.

Am I willing to go to Mars? Yes, but I'm not willing to spend nine months getting there, then wait 18 more months until the planets align to come home.