A NASA satellite orbiting Mars turned its cameras toward Earth and snapped a few shots a couple of months ago.

The resulting image is a combination of two exposures on November 20, 2016, according to a news release from NASA. Some tweaking was done to brighten the moon's image, because from a Mars perspective, the moon is very dark. The photos do show the proper relative sizes, but the distance between the Earth and moon is much closer. When the photo was taken, the moon was passing behind the Earth in its orbit (from the Mars viewpoint).

Australia is the continent you can see on Earth. By the way, the camera that took this photo was 127 million miles from Earth. That's a pretty good telephoto lens.

The photos are from the Mars Reconnaissance Orbiter, which usually has its cameras pointed down toward the surface of Mars. There's lots more to see at the MRO website.