This image of Neptune was taken by NASA Voyager 2 wide-angle camera; small trails of similar clouds trending east to west and large scale structure east of the Great Dark Spot all suggest that waves are present in the atmosphere and play a large role

Neptune – True Color of Clouds

This image of Neptune was taken by NASA Voyager 2 wide-angle camera; small trails of similar clouds trending east to west and large scale structure east of the Great Dark Spot all suggest that waves are present in the atmosphere and play a large role. http://photojournal.jpl.nasa.gov/catalog/PIA00063