 Still ahead on Bloomberg Business Week, from space race to space walk, a retired NASA astronaut on what it's like to live in shared space in space. It kind of reminds you that you're in a place that almost nobody else is, and all the rules are different, which is extremely important for science and all the stuff we can learn up there. And at the same time, it's also a human thing to realize that you are one of, in this case right now, there's 13, let's see, 12 people up in space on different space stations as we speak, and they're at the very edge.