A view of the Milky Way supermassive black hole Sagittarius A* in polarized light.

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   Fraser Cain (fraser@m.universetoday.com)'s status on Friday, 30-Aug-2024 03:37:36 JST Fraser Cain

   A longstanding mystery in astronomy is the growth of supermassive black holes early in the Universe. Within a few hundred million years of the Big Bang, some black holes were already approaching a billion solar masses. The problem is that hydrogen heats up as it collects, pushing away new material that could be added to a star, limiting its mass. Researchers think that early dark matter could have kept hydrogen from cooling, allowing more to collect into a small region.

   https://newsroom.ucla.edu/releases/dark-matter-helped-make-supermassive-black-holes-in-the-early-universe