Radio-galaxy meaning

A galaxy emitting large amounts of radio energy.
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A galaxy emitting stronger radio waves than a normal galaxy.
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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.
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(astronomy) Type of galaxy that is very luminous at radio wavelengths.
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