This image composite combines the best Earth image (ESP_048368_9041) with the best Moon image (ESP_048368_9044) from four sets of images acquired on 20 November 2016.
Each is separately processed prior to combining (in correct relative positions and sizes), so that the Moon is bright enough to see. The Moon is much darker than Earth and would barely show up at all if shown at the same brightness scale as Earth. Because of this brightness difference, the Earth images are saturated in the best Moon images, and the Moon is very faint in the best (unsaturated) Earth image. [More at links]
Editor note: more here describing the viewpoint and timing.