View Single Post
  #5  
Old 10-07-2020, 06:42 PM
gary
Registered User

gary is offline
 
Join Date: Apr 2005
Location: Mt. Kuring-Gai
Posts: 5,524
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/
Reply With Quote