Science has not yet mastered prophecy. We predict too much for the next year and yet far too little for the next 10.

I am, and ever will be, a white-socks, pocket-protector, nerdy engineer.

The exciting part for me, as a pilot, was the landing on the moon. That was the time that we had achieved the national goal of putting Americans on the moon. The landing approach was, by far, the most difficult and challenging part of the flight. Walking on the lunar surface was very interesting, but it was something we looked on as reasonably safe and predictable. So the feeling of elation accompanied the landing rather than the walking.

We have no proof, But if we extrapolate, based on the best information we have available to us, we have to come to the conclusion that ... other life probably exists out there and perhaps in many places.

I'm substantially concerned about the policy directions of the space agency. We have a situation in the U.S. where the White House and Congress are at odds over what the future direction should be. They're sort of playing a game and NASA is the shuttlecock that they're hitting back and forth.

It's a strange, eerie sensation to fly a lunar landing trajectory not difficult, but somewhat complex and unforgiving.

If that's there, I believe that technology will probably step up to their part of it.