Charles Duke

I think a Moon base is not necessary to get to Mars, but I think it will be helpful. It would give you a chance to develop and mature some systems; long duration, deep space stuff; and you're close enough to get some help, via radio from Earth.

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.

I don't know why everyone feels the pressure to look young. Personally, I hate it. I don't want to inject Botox and look young forever. It's living in denial and anything that has an undercurrent of this philosophy is bad for your growth.