Peter Mitchell's groundbreaking show A New Refutation of the Viking 4 Space Mission was first presented at the Impressions Gallery of Photography in York at the end of the seventies, and decades later at the Rencontres d'Arles. Some thirty-eight years overdue, the body of work was published as a book for the first time by RRB Photobooks. In the mid-seventies, the Viking Landers were the first to land on planet Mars. Though the alien landscape was magnificent, there were no canals, no skeletons and no wind-blown ruined dwellings; today, not a single trace remains of Viking Landers three and four. But myth—and various conspiracy theories—have it that an alien survey was commissioned of planet Earth. Mitchell's work features colour photographs of Leeds—shopkeepers, terraces, scarecrows, signs—presented on a background of space charts, the conceit being that an alien has landed from Mars and is wandering around Leeds with a degree of surprise and puzzlement. The book is accompanied by Val Williams's essay 'Peter Mitchell Performs Photography: Life Aboard the Unda Wunda'. The full set of sixty-five images that made up the original show was later acquired by Tate Modern.