radio galaxy

noun

: a galaxy that is a powerful source of radio waves

Examples of radio galaxy in a Sentence

Recent Examples on the Web

The X-ray emissions from these radio galaxies come from jets of particles blasted out from around feeding supermassive black holes at near-light speeds. — Robert Lea, Space.com, 29 July 2026

The surrounding plumes of incredibly hot gas exert their own pressure, in this case even higher than most other radio galaxies. — Andrew Paul, Popular Science, 15 Jan. 2026

With jets both in the plane of the school and with one directed at us, this galaxy was reclassified as a radio galaxy with a blazar at its center. — Julia Musto, Fox News, 1 Apr. 2023

Word History

First Known Use

1959, in the meaning defined above