The HiRISE camera would make a great backyard telescope for viewing Mars, and it can also be used to view other planets. When HiRISE snapped this view on October 3, 2007, its home planet was 88 million miles (142 million km) away, giving Earth a diameter of about 90 pixels and the Moon 24 pixels. In view is the west coast of South America (at lower right), though clouds are the dominant features. The Moon image was brightened relative to Earth for this composite. Click here
for more information and to see a larger view.
NASA / JPL / Univ. of Arizona