| 单词 | radio galaxy |
| 释义 | radio galaxynouna galaxy that emits much more strongly in the radio part of the spectrum than does a typical galaxy. Origin of radio galaxyFirst recorded in 1955–60 Words nearby radio galaxyradiodiagnosis, radio direction finder, radioelement, Radio Free Europe/Radio Liberty, radiofrequency, radio galaxy, radiogenic, radiogold colloid, radiogoniometer, radiogram, radiograph Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for radio galaxyradio galaxy nouna galaxy that is a strong emitter of radio waves Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for radio galaxyradio galaxy A galaxy that emits large amounts of radio energy. Radio galaxies are typically elliptical galaxies with large symmetrical lobes. The centers of radio galaxies are active galactic nuclei, and many expel one or more jets of matter directly from the nucleus that can be observed in the visible spectrum and extend for millions of light-years. See also Seyfert galaxy. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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