The High Resolution Imaging Science Experiment (HiRISE) camera, on NASA's Mars Reconnaissance Orbiter, captured this image of Earth and the moon.

At the time the image was taken, Earth was 142 million kilometers (88 million miles) from Mars, giving the HiRISE image a scale of 142 kilometers (88 miles) per pixel, an Earth diameter of about 90 pixels and a moon diameter of 24 pixels.