Question

Why do astronomers believe that the engine at the center of a quasar is a supermassive black hole?

Answer 1

Hey Mate..

Hubble has observed several quasars and found that they all reside at galactic centres. Today most scientists believe that super massive black holes at the galactic centres are the "engines" that power the quasars. ... However, astronomers can study the effects of black holes on their surroundings.

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#Nisha

Answer 2

Astronomers now believe that quasars are the extremely luminous centers of galaxies in their infancy. After decades of intense study, we have another term for these objects: a quasar is a type of active galactic nucleus, or AGN. There are actually many different types of AGNs, each with their own tale to tell.