Topic
Active Galaxies
2 questions tagged Active Galaxies — spanning every one of the seven Ws.
why
Why do quasars shine so brightly?
Quasars shine because matter falling into a supermassive black hole heats up to extreme temperatures before crossing the event horizon. The glowing accretion disk can release more light than billions of stars combined.
CosmologyActive Galaxies
how
How do quasars produce so much light?
A quasar is powered by a supermassive black hole feeding on gas and dust. As the material heats up while falling in, it can outshine an entire galaxy.
SpaceActive Galaxies