a galaxy that emits much more strongly in the radio part of the spectrum than does a typical galaxy.
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How to use radio galaxy in a sentence
A giant radio galaxy with plumes of electrons stretching nearly 5 million light years from top to bottom of the image.‘Dancing Ghosts’: A New, Deeper Scan of the Sky Throws Up Surprises for Astronomers | Ray Norris | August 5, 2021 | Singularity Hub
Not likely, because the ORCs are very distinctly circular, unlike the tangled clouds we see in radio galaxies.‘WTF?’: Newly Discovered Ghostly Circles in the Sky Can’t Be Explained by Current Theories, and Astronomers Are Excited | Ray Norris | December 30, 2020 | Singularity Hub
British Dictionary definitions for radio galaxy
a 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 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.
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