Imagine being on Apollo 8, on December 24, 1968, with the astronauts who became the first humans to circle the moon. The mission was historic but, the famous “Earthrise” photo that resulted, showing Earth rising above the lunar landscape was even more memorable. Up until that point, no human eyes had ever seen our blue marble from such a distance. The photo has been described by Nature photographer Galen Rowell as, “the most influential environmental photograph ever taken.” Ironically, of all the objectives NASA had set before launch, no one had thought of photographing the Earth from lunar orbit. They did not predict the importance of that moment, and the photo that would forever change our view of the earth. Nonetheless, the moment was upon them and, they were ready.