How can you make sense of a world where no one has ever lived? Acclaimed science writer Oliver Morton tells the story of the heroic landscapes of Mars, now better mapped in some ways than the Earth itself. Mapping Mars introduces the reader to the nineteenth-century visionaries and spy-satellite pioneers, the petroleum geologists and science-fiction writers, the artists and Arctic explorers who have devoted themselves to the discovery of Mars. In doing so they have given a new world to the human imagination, a setting for our next great adventure.