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Old 09-30-2019, 07:09 AM
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socratus socratus is offline
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Join Date: Aug 2011
Location: Israel
Posts: 452
How Do Black Holes Form?
Primordial black holes are thought to have formed
in the early universe, soon after the big bang.
Stellar black holes form when the center of a very
massive star collapses in upon itself.
This collapse also causes a supernova, or
an exploding star, that blasts part of the star into space.

https://www.nasa.gov/audience/forstu...k-hole-58.html

Soon after the big bang a very Primordial massive star collapses in upon itself . . .
#
By absorbing other stars and merging with other black holes,
supermassive black holes of millions of solar masses (M☉) may form.

https://en.wikipedia.org/wiki/Black_hole

Questions:
1 - In which Reference Frame the very Primordial massive
Star collapsed, soon after the big-bang ?
2 - What was temperature of the RF where the very
Primordial massive Star was collapsed ?
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