The story behind the Earthrise photograph

Here's Phil Plait (the Bad Astronomer) talks about that famous photograph of earth rising against the background of the moon, which was taken by Apollo 8 astronauts:
http://www.slate.com/blogs/bad_astronomy/2013/12/20/earthrise_recreating_an_iconic_moment_in_space_history.html

NASA put together a video regarding what happened when they were in position & saw the Earth. They hadn't planned it, they were doing something else, and the earth came into view. They didn't even have color film in the camera - had to get it in there quickly.