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| Description: The Sunspot Cycle (c) The Sun has many fewer sunspots when it is not active (this photo, showing a time with no sunspots, was taken in 1989). Picture Stats: Views: 498 Filesize: 157.4kB Height: 900 Width: 902 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=18356 |