Voyager 2 false-color image of Uranus taken from 2.7 million km. The atmosphere of Uranus is incredibly clear and appears blue-green in color naturally. This picture is a composite of 3 images taken by the wide-angle camera using orange, short-wavelength methane, and long-wavelength methane filters. The processing brings out high-altitude hazes, including the pink area centered on the south pole. The bluest regions are the most haze free. Uranus is about 51,000 km in diameter.