Before he was an astronaut, a young Chris Hadfield was a Cold War test pilot intercepting Soviet bombers. If that sounds like the beginning of a novel, you’re not far off. In conversation with Matt Galloway, the astronaut-turned-bestselling-author talks about his latest book The Defector — and how he builds a story from his real life. Plus, what he thinks about billionaires in space (see Elon Musk), and a friendly game of Name that Space Film.