The Gateway to Astronaut Photography is an enormous collection of photographs taken by astronauts over a period of decades. From the site: “Beginning with the Mercury missions in the early 1960s, astronauts have taken photographs of the Earth. Our database tracks the locations, supporting data, and digital images for these photographs. We process images coming down from the Space Shuttle and International Space Station on a daily basis and add them to the more than 630,209 views of the Earth already made accessible on our website.” Via La Cartoteca.