Devon Island, Canada
Devon Island, Canada's largest uninhabited island, is home to NASA's seasonal simulation expeditions, named after its 12.5-mile-wide, 23-million-year-old meteorite impact crater, Haughton. The island's cold, rocky landscape has led to the testing of robots, spacesuits, drills, and other space tools since the 1990s. Cornwallis Island, with a population of 200, is 50 miles away.