On Christmas Eve 50 years ago, a combination of chance and collaboration allowed Apollo 8 astronauts Frank Borman, Jim Lovell and Bill Anders to take the now-iconic “Earthrise” photograph from the window of the spacecraft. Despite being the first people to leave our home planet and travel to another body in space, the astronauts would come to recall that the most important thing they discovered was Earth. With the help of data from NASA's Lunar Reconnaissance Orbiter and archival audio from the