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Black holes keep 'burping up' stars they destroyed years earlier, and astronomers don't know why (www.livescience.com)

submitted 6 months ago by [email protected] to c/[email protected]

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[–] Chemical 4 points 6 months ago (1 children)

Can someone calculate how much time passes once in a black hole? Perhaps the stars (now just random matter, I assume) only experienced seconds/minutes/days for the years they were engulfed

[–] [email protected] 4 points 6 months ago* (last edited 6 months ago)

https://www.reuters.com/technology/space/ferocious-black-holes-reveal-time-dilation-early-universe-2023-07-03/

Scientists have demonstrated "time dilation" in the early universe by studying quasars, supermassive black holes. Using 190 quasars as a cosmic clock, they observed time passing about a fifth as quickly as today, dating back 12.3 billion years. The study compared the brightness fluctuations of ancient quasars to those today, finding a fivefold slowdown.