Astronomers See Evidence of Supermassive Black Holes Forming Directly in the Early Universe

The workings of the Universe.
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fred8615
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Astronomers See Evidence of Supermassive Black Holes Forming Directly in the Early Universe

Post by fred8615 » July 1st, 2019, 3:36 pm

Super-Massive Black Holes (SMBH) are hard to explain. These gargantuan singularities are thought to be at the center of every large galaxy (our Milky Way has one) but their presence there sometimes defies easy explanation. As far as we know, black holes form when giant stars collapse. But that explanation doesn’t fit all the evidence.

The stellar-collapse theory does a good job of explaining most black holes. In that theory, a star at least five times more massive than our Sun begins to run out of fuel near the end of its life. Since the outward pressure of a star’s nuclear fusion is what supports it against the inward gravity from its own mass, something has to give when the fuel runs out.

The star undergoes a hypernova explosion, then collapses in on itself. What’s left is a black hole. Astrophysicists think that SMBHs start out this way, and grow into their enormous sizes by essentially ‘feeding’ on other matter. They swell in size, and sit in the center of their gravity kind of like a spider fattening up in the middle of its web.

The problem with that explanation is that it takes a long time to happen.

Read more: https://www.universetoday.com/142706/as ... -universe/
Frederick J. Barnett
"Someone's got to take the responsibility if the job's going to get done!! Do you think that's easy?!" Gregory Peck - The Guns Of Navarone

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