But when I wasn't working, I was usually at a window looking down at Earth.

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.

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!

Different astronauts sleep in different ways.

I think eventually private enterprise will be able to send people into orbit, but I suspect initially it's going to have to be with NASA's help.

I liked math - that was my favorite subject - and I was very interested in astronomy and in physical science.

The rockets light! The shuttle leaps off the launch pad in a cloud of steam and a trail of fire.