How do quasars differ from stars?

To put it briefly, a quasar appears to be a star from a distance, but upon closer inspection, it differs greatly from a star in many ways.

First of all, quasars shine anywhere between 10 and 100,000 times brighter than the Milky Way, making them the brightest objects in the universe.

Second, in addition to rotating at a very high speed, quasars release massive amounts of energy—millions, billions, or even trillions of electron volts—that exceed the total energy released by the galaxy in which they are located.

Lastly, they are limited to appearing in galaxies that have super-massive black holes, which have the potential to hold billions of times the mass of the sun.

In addition to emitting vast amounts of energy, quasars are typically found at the centers of galaxies, whereas stars are found throughout galaxies. Quasars are extremely bright and distant objects powered by supermassive black holes, while stars are celestial objects that generate light and heat through nuclear fusion in their cores.