How does the typical lifespan of a supernova's brilliance compare to the active lifespan of a quasar?
Answer
A supernova lasts weeks or months, while a quasar can maintain extraordinary brightness for millions of years.
The glory of a supernova is fleeting, lasting only weeks or months, whereas quasars, powered by accreting supermassive black holes, can remain luminous for vast timescales.
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