On July 20, 1969, Earth was missing three of its humans. They had left for the moon four days earlier, and now, two of them were preparing to descend from lunar orit and land in the Sea of Tranquility. 50 years later, we can all take part in the famous mission. This app is the result of years of painstaking research. Co-Produced by TIME, John Knoll of Industrial Light & Magic, the Smithsonian's National Air and Space Museum and Smithsonian's Digitization Program Office, Trigger, and RYOT.