The Black Hole That Kills Galaxies - Quasars

A video on YouTube. In Explainers, a Krater category.

Summary by Krater

This video explains the nature of quasars, which are powered by supermassive black holes at the centers of galaxies, and discusses whether the Milky Way was once a quasar and how quasars can starve and shut down star formation in galaxies.

From the video

Answers: What are quasars and how do they affect galaxies?

Quasars
Supermassive black holes
Accretion disks
Galaxy evolution
Star formation
Milky Way history

What it concludes

Quasars are powered by supermassive black holes feeding on gas from accretion disks rather than nuclear reactions.
The Milky Way may have been a quasar in the past and could potentially become one again after merging with Andromeda.
Quasars heat up gas and stop star formation in galaxies, ultimately killing their host galaxy.

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