I felt very honored, and I knew that people would be watching very closely, and I felt it was very, very important that I do a good job.
I had both male and female heroes.
I liked math - that was my favorite subject - and I was very interested in astronomy and in physical science.
I slept just floating in the middle of the flight deck, the upper deck of the space shuttle.
I was always very interested in science, and I knew that for me, science was a better long-term career than tennis.
It takes a couple of years just to get the background and knowledge that you need before you can go into detailed training for your mission.
NASA has to approve whatever we wear, so there are clothes to choose from, like space shorts - we wear those a lot - and NASA T-shirts.
Different astronauts sleep in different ways.
It's easy to sleep floating around - it's very comfortable. But you have to be careful that you don't float into somebody or something!
I do a lot of running and hiking, and I also collect stamps - space stamps and Olympics stamps.
I didn't really decide that I wanted to be an astronaut for sure until the end of college.
No, I think most astronauts recognize that the space shuttle program is very high-risk, and are prepared for accidents.
Even though NASA tries to simulate launch, and we practice in simulators, it's not the same - it's not even close to the same.
My background is in physics, so I was the mission specialist, who is sort of like the flight engineer on an airplane.
But when I wasn't working, I was usually at a window looking down at Earth.