“Different astronauts sleep in different ways. I slept just floating in the middle of the flight deck, the upper deck of the space shuttle. 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. Some astronauts sleep in sleeping bags that are Velcroed into one of the walls in the shuttle. 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!”