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| Description: Supermassive Black Holes as Engines for Galactic Activity (b) The giant elliptical galaxy NGC 4261 is a double-radio source located in the Virgo cluster, about 100 million ly from Earth. A visible-light photograph of the galaxy (white) is combined with a radio image (orange and yellow) to show both the visible galaxy, which does not emit much radio energy, and its jets, which do. (Inset) This Hubble Space Telescope image of the nucleus of NGC 4261 shows a disk of gas and dust about 800 ly (250 pc) in diameter, orbiting a supermassive black hole. Picture Stats: Views: 731 Filesize: 201.57kB Height: 715 Width: 1350 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=18766 |