This is an image of Neptune.
Click on image for full size
NASA
An Overview of Neptune's Atmosphere
Neptune's atmosphere shows a striped pattern of clouds, just like that of Jupiter and Saturn. Neptune even has a Great Dark Spot similar to the Great Red Spot of Jupiter.
The history of Neptune's atmosphere is like that of the other Giant planets.
The clouds of Neptune are thought to be made of a complex molecule called methane.
Motions in the cloud patterns of Neptune give clues about Neptune's weather, which is like that of Jupiter and Saturn.
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