Once you've been first, it cannot be done again. Not by you, not by anyone else.

We can't start over and develop a Saturn 5-type vehicle from scratch.

I didn't start skiing until I was 50. My wife Lois taught me how to ski. I'm proficiently conservative.

Unfortunately, kids are led to believe things are easier to achieve than they really are.

A space program that truly goes somewhere! With his deeds, not only words, President Obama has revitalized our struggling space program.

If you want to say that the sky is black, and if I'm there, even if I fall back down again, I will be weightless for a period of time - maybe that's the definition of space.

There were about six years when there was not one American who went into space. We shouldn't do that again.