Software Engineer T. Adrian Hill is working on spacecraft traveling to both ends of the solar system. He's a college football ref, too.
Eugene Chiang
Professor At first, the stars gave Eugene Chiang the cold shoulder. Chiang, then 12, would haul his telescope out at night on Long Island, New York, only to find his view wrecked by city lights or tall trees. On many nights, the cold drove him inside. So he became a theorist instead.
David Doody
Space Flight Operations Engineer David Doody has been flying spacecraft since he was 5. Well, sort of flying them.