Mark Wolverton is a science writer and the author of Burning the Sky- Operation Argus and the Untold Story of the Cold War Nuclear Tests in Outer Space, A Life in Twilight- The Final Years of J. Robert Oppenheimer, and The Depths of Space- The Story of the Pioneer Planetary Probes. His journalism has appeared in WIRED, Nature, Undark, Scientific American, Air & Space Smithsonian, and other publications.