This montage of planetary images was taken by spacecraft managed by NASA's Jet Propulsion Laboratory. 1. The Mercury image was taken by Mariner 10, 2. The Venus image by Magellan, 3. T the Earth image by Galileo, 4. The Mars image by Viking, and 5. The Jupiter, Saturn, Uranus and Neptune were taken images by Voyager.
Image Credit: NASA/JPL