Buzz Aldrin doesn't think we need to go back to the Moon - that we should go straight on to Mars. I'm more on the side that says we should go back to the Moon. I think there's a lot we can utilise the Moon for scientifically.

The only time I had what you would call life-threatening fear was when I was on the Moon. Towards the end of our stay, we got excited and we were going to do the high jump, and I jumped and fell over backwards. That was a scary time, because if the backpack got broken, I would have had it. But everything held together.

It was a texture. The blackness was so intense.

Roger, Tranquility. Be advised there are lots of smiling faces in this room and all over the world. Over.

I'm proud to be an American, I'll tell you. What a program and what a place and what an experience.

Roger, we copy. It was beautiful from here, Tranquility. Over.

Roger, Tranquility. We copy you on the ground. You've got a bunch of guys about to turn blue. We're breathing again. Thanks a lot.