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

I find myself looking around for other new, interesting opportunities to dive into.

The food isn't too bad. It's very different from the food that the astronauts ate in the very early days of the space program.

We can see cities during the day and at night, and we can watch rivers dump sediment into the ocean, and see hurricanes form.

So most astronauts are astronauts for a couple of years before they are assigned to a flight.

Some astronauts sleep in sort of beds - compartments that you can open up and crawl into and then close up, almost like a little bedroom.

But even in elementary school and junior high, I was very interested in space and in the space program.