❓ why
Why do quasars shine brighter than entire galaxies?
Quick Answer
Quasars are powered by supermassive black holes pulling in huge amounts of gas, which heats up and radiates enormous energy. The accretion disk can outshine the stars in its host galaxy.
The Full Story
A quasar is an active galactic nucleus powered by a supermassive black hole. As gas spirals inward, friction and compression heat it to extreme temperatures, causing it to emit intense radiation across the spectrum. This energy output can exceed that of the entire galaxy around it. Many of the brightest quasars we see are from the early Universe, when galaxies were growing rapidly.
Key Facts
1.Quasars are powered by accreting supermassive black holes
2.They can outshine their entire host galaxies
3.Many are seen at high redshift, from the early Universe
YouTube Angle
Suggested video title for this topic:
"How can one black hole outshine billions of stars?"
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