Range : 4.2 million km. ( 2.6 million miles ) P-34649 This photograph of Neptune's southern hemisphere taken by Voyager 2's narrow angle camera, through the green and clear filters. The smallest feature that can be seen are 38 km ( 24 miles ) across. the almond shaped structure at the left is a large cloud system that has been seen for several weeks. Internal details in the feature have become increasingly apparent as Voyager 2 has approached. Systems with similiar shapes in Jupiter's atmosphere rotate about their centers, rolling in the local winds that increase toward the south. However, the wispy nature of the white central clouds in this Neptunian feature make confirmation of the syste.m's rotation difficult
Photographer JPL