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We want to make sure we get living astronauts to the surface of Mars.

I've been approached to do some things with astronauts and the preparation that astronauts go through.

One thing I probably share with everyone else in the astronaut office is composure.

Astronauts are very professional and when they're preparing for launch, they prepare for it as the most serious endeavor of our lives.

That's what we want to do here at Johnson Space Center. I think what we have always brought to NASA and brought to the country is trying to push the boundaries, trying to go to the next level.

When we meet people who are astronauts or deal in astronomy, it's always really fascinating.

Many of us in Congress have been calling on the Administration to articulate a bold mission for NASA. It seems that the President is answering that call. I wholeheartedly support his vision for going back to the moon, and from there to worlds beyond.

We're going to be focusing our science on things that will take us farther and longer into space. For many of those experiments, the crew members are human guinea pigs, which is fine; that's part of my job. I don't mind being a human guinea pig.

Fortunately, I got called down to NASA for an interview. And one thing led to the next, and one day I got that call. I've been here about seven years now and am really enjoying it.