“Oh, my God! Look at that picture over there! Here’s the earth coming up. Wow, is that pretty!” –Commander Frank Borman, Apollo 8, December 24, 1968
This is from the first manned mission to the moon, which entered lunar orbit on this day in 1968.
More on that historic day – and the frankly religious awe it inspired in the astronauts – is here, on NASA’s Image of the Day gallery.