This image provided by NASA shows a Saturn image taken on Dec. 24, 2010 by the Cassini camera showing a storm, upper center, covering an area similar to that from London to Cape Town.(AP Photo/NASA)
This image provided by NASA shows a Saturn image taken on Dec. 24, 2010 by the Cassini camera showing a storm, upper center, covering an area similar to that from London to Cape Town.(AP Photo/NASA)
