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| Description: Cygnus A (3C 405) Radio image produced from observations made at the Very Large Array. Most of the radio emissions from Cygnus A come from the radio lobes located on either side of the peculiar galaxy seen in the inset, a Hubble Space Telescope image. Each of the two radio lobes extend about 160,000 ly from the optical galaxy and contain a brilliant, condensed region of radio emission. (Inset) At the heart of this system of gas lies a strange-looking galaxy that has a redshift that corresponds to a recessional speed of 5% of the speed of light. According to the Hubble law, Cygnus A is therefore 635 million ly from Earth. Because Cygnus A is one of the brightest radio sources in the sky, this remote galaxy’s energy output must be enormous. Picture Stats: Views: 429 Filesize: 401.24kB Height: 772 Width: 1350 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=18750 |