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!

It's no secret that I've been reluctant to use my name for things.

I was always very interested in science, and I knew that for me, science was a better long-term career than tennis.

My background is in physics, so I was the mission specialist, who is sort of like the flight engineer on an airplane.

I would like to be remembered as someone who was not afraid to do what she wanted to do, and as someone who took risks along the way in order to achieve her goals.

If we want scientists and engineers in the future, we should be cultivating the girls as much as the boys.

When you're getting ready to launch into space, you're sitting on a big explosion waiting to happen.