What is another word for active galaxy?
Pronunciation: [ˈaktɪv ɡˈalɐksˌi] (IPA) 
Active galaxies are celestial objects that emit very high-energy radiation and are characterized by a strong central source of energy. These galaxies have been observed to emit large amounts of radiation, with a significant component of X-rays, radio waves and visible light. Synonyms for active galaxies include Starburst Galaxy, Quasar, Seyfert Galaxy, Blazar, and Radio Galaxy. Starburst galaxies refer to galaxies that are experiencing intense star formation, while quasars are the most luminous and distant active galactic nuclei. Seyfert galaxies are similar to quasars but are less luminous, and Blazars are a type of active galaxy that emit strong jets of radiation. Radio galaxies emit strong radio emissions, making them visible in the radio spectrum.
