Stock photography, photos: Earth, North American Continent Stock photos of Full Earth from space showing nightfall over the North American continent Photograph: © Douglas Pulsipher Click for a larger image and more information Keywords associated with this stock photo: earth, space, earth from space, globe, full, sunrise, sunset, north american continent, north america, america, nasa, exploration, global, evening, night, twilight, climate, climate change, atmosphere, ozone layer,