Previous ... Next ... Planet Profile ... Explorer ... Up a Level ... Home

Cloud Evolution

The bright cirrus-like clouds of Neptune change rapidly, often forming and dissipating over several hours. In this sequence spanning two rotations of Neptune (~36 hours), Voyager 2 observed cloud evolution in the region around the Great Dark Spot. The surprisingly rapid changes, which occurred over the 18 hours separating each panel, show that in this region Neptune's weather is perhaps as dynamic and variable as that of the Earth's. However, the scale is immense by our standards because the Earth and the Great Dark Spot are similar in size.

Listen to caption: Real Audio MP3 Audio