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File:Neptune's Great Dark Spot.jpg

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English: Neptune's Great Dark Spot, a large anticyclonic storm similar to Jupiter's Great Red Spot, observed by NASA's Voyager 2 spacecraft in 1989. This photograph shows the last face on view of the Great Dark Spot that Voyager will make with the narrow angle camera. The image was shuttered 45 hours before closest approach at a distance of 2.8 million kilometers (1.7 million miles). The smallest structures that can be seen are of an order of 50 kilometers (31 miles). The image shows feathery white clouds that overlie the boundary of the dark and light blue regions. The pinwheel (spiral) structure of both the dark boundary and the white cirrus suggest a storm system rotating counterclockwise. Periodic small scale patterns in the white cloud, possibly waves, are short lived and do not persist from one Neptunian rotation to the next. This color composite was made from the clear and green filters of the narrow-angle camera. The Voyager Mission is conducted by JPL for NASA's Office of Space Science and Applications.
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来源 http://photojournal.jpl.nasa.gov/catalog/PIA00052
作者 NASA / Jet Propulsion Lab
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Public domain 本文件完全由NASA创作,在美国属于公有领域。根据NASA的版权方针,NASA的材料除非另有声明否则不受版权保护。(参见Template:PD-USGov/zhNASA版权方针页面JPL图片使用方针。)
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当前2019年2月7日 (四) 18:592019年2月7日 (四) 18:59版本的缩略图700 × 852(708 KB)Kesäperuna100% JPEG quality from full quality TIFF.
2006年9月18日 (一) 17:262006年9月18日 (一) 17:26版本的缩略图700 × 852(72 KB)Uwe W.'''Original Caption Released with Image:''' This photograph shows the last face on view of the Great Dark Spot that Voyager will make with the narrow angle camera. The image was shuttered 45 hours before closest approach at a distance of 2.8 million kilom

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