When most people think about space they think of astronauts, names like Neil Armstrong, Buzz Aldrin, and Chris Hadfield are familiar to an awful lot of people. But for every astronaut that makes it to space there are legions of smart, dedicated, and interesting people who plan, design, build and operate the mission, spacecraft and instruments that make up the space program. Terranauts is about those people. The ones that go to space all the time, without ever leaving the planet. These are their stories.