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Old 10-07-2020, 07:42 PM
gary
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gary is offline
 
Join Date: Apr 2005
Location: Mt. Kuring-Gai
Posts: 5,926
Quote:
Originally Posted by glend View Post
I always believed you needed a certain mass to develop a black hole. A grapefruit sized black hole? Sounds impossible.
Hi Glen,

Hypothesised primordial black holes are remnant bits of matter that
collapsed back in on themselves shortly after the Big Bang.

See
https://en.wikipedia.org/wiki/Primor...0black%20holes.

They had at one point been a Dark Matter candidate but a Japanese
research group claimed last year they had proven they can't :-
https://www.universetoday.com/141923...l-black-holes/
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