Question

what is a quasar.... explain​

Answer 1

Answer:

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Explanation:

A quasar is an extremely luminous active galactic nucleus (AGN) in which a supermassive black hole with mass ranging from millions to billions of times the mass of the sun is surrounded by a gaseous accretion disk.

Answer 2

Answer:

Shining so brightly that they eclipse the ancient galaxies that contain them, quasars are distant objects powered by black holes a billion times as massive as our sun. ... Astronomers called them "quasi-stellar radio sources," or "quasars," because the signals came from one place, like a star.

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