I was literally just a couple of months away from getting my Ph.D. in physics when I saw, believe it or not, an ad in the Stanford student newspaper, that had been put in the newspaper by NASA, saying that they were accepting applications for astronauts, and the moment I saw that, I knew that that’s what I wanted to do. Not that I wanted to leave physics, I loved it, but I wanted to apply to the astronaut corps and see whether NASA would take me, and see whether I could have the opportunity to go on that adventure.