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| Description: Barred Spiral Galaxies As he did with spiral galaxies, Edwin Hubble classified barred spirals according to the tightness of their spiral arms (which correlates with the size of their central bulges). (a) SBa galaxies have the most tightly wound spirals and largest central bulges Picture Stats: Views: 657 Filesize: 328.54kB Height: 900 Width: 1075 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=18714 |