Answer: Hello, There! Your Answer is Below
Quasars can only exist while sufficient material is falling into the accretion disc. Once the material runs out the active galaxy becomes a regular galaxy. The quasars which have been observed are billions of light years away. This means that they are young galaxies as seen in the early universe
Explanation:
Quasars live only in galaxies with supermassive black holes — black holes that contain billions of times the mass of the sun quasars have luminosities thousands of times greater than a galaxy such as the Milky Way. Usually, quasars are categorized as a subclass of the more general category of AGN. The redshifts of quasars are of cosmological origin.
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-August~
