Cosmic Gateway

A daily gateway from astronomy discoveries to genuine understanding.

Concept · beginner

Quasar

An extremely luminous galactic nucleus powered by a rapidly accreting supermassive black hole.

Quasars

Quasars outshine their host galaxies. Matter spiraling into a supermassive black hole forms a hot accretion disk that radiates across the spectrum. Dust can redden and obscure that light.

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