There are always door openings. And gradually, it accumulates. The opportunities open up in front of you.

The surface of the moon is like nothing here on Earth! It's totally lacking any evidence of life. It has lots of fine, talcum-powderlike dust mixed with a complete variety of pebbles, rocks, and boulders. Many pebbles, fewer rocks, and even fewer boulders naturally make up its surface. The dust is a very fine, overall dark gray. And with no air molecules to separate the dust, it clings together like cement.

Ray Bradbury is one who is contributing to the understanding of the imagination and the curiosity of the human race.

Before deciding what to do about national space policy, Obama set up an outside review panel of space experts, headed up by my friend Norm Augustine, former head of Lockheed Martin and a former government official.

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

Does it make sense for the U.S. to expend hundreds of billions of dollars to mount a new Apollo-style program to return to the moon? Or have we blazed that trail? Shouldn't we help other nations achieve this goal with their own resources but with our help?

You can never tell when a commercial space venture will suddenly become viable.