Re: How black holes saved relativity

From	Odd Bodkin <bodkinodd@gmail.com>
Newsgroups	sci.physics
Subject	Re: How black holes saved relativity
Date	2016-03-31 17:57 -0500
Organization	Aioe.org NNTP Server
Message-ID	<ndka12$15s4$1@gioia.aioe.org> (permalink)
References	(2 earlier) <da36051f-15c6-4cf1-bbe8-11f0b0d3fbea@googlegroups.com> <ndjcdf$g0o$4@pcls7.std.com> <e3b8d48e-9723-4e7e-a6bf-abb6fb36d41a@googlegroups.com> <ndjkvi$2qv$1@gioia.aioe.org> <77e4534e-4646-4e58-893f-1234d89433fb@googlegroups.com>

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On 3/31/2016 5:34 PM, john wrote:
> Odd said
> "The fact that things orbit around it, subject to gravity.
> If there were no matter staying in the black hole, there would be no
> source of gravity to make them go around. "
>
> Odd, just because you've always
> seen things work this way doesn't
> mean they always do.
> Nobody has seen inside a BH- nobody
> knows if ANYTHING is inside.
>

Well that's true. But they know that something gravitates. And the 
theory of gravity predicts these things will come from the collapse of 
stars beyond a certain mass. And we have lots of stars, but none beyond 
that certain mass, and there's no reason why they wouldn't be there 
above that particular mass, and so that leads people to believe the 
collapse prediction. And then there's evidence of black holes, and so 
that's more evidence of the collapse.

This is why when we see a big crater on the surface of the earth, we 
know to go look for the meteor that caused it, and we're less likely to 
look for something like "pure spin" that created it.

-- 
Odd Bodkin --- maker of fine toys, tools, tables

Thread

How black holes saved relativity Sam Wormley <swormley1@gmail.com> - 2016-03-30 15:19 -0500
  Re: How black holes saved relativity "hanson" <hanson@quick.net> - 2016-03-30 21:00 -0700
    Re: How black holes saved relativity john <johnsefton288@gmail.com> - 2016-03-31 02:43 -0700
      Re: How black holes saved relativity "hanson" <hanson@quick.net> - 2016-03-31 06:27 -0700
      Re: How black holes saved relativity HVAC <mr.hvac@gmail.com> - 2016-03-31 06:41 -0700
      Re: How black holes saved relativity moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-03-31 14:32 +0000
        Re: How black holes saved relativity john <johnsefton288@gmail.com> - 2016-03-31 08:01 -0700
        Re: How black holes saved relativity john <johnsefton288@gmail.com> - 2016-03-31 08:08 -0700
          Re: How black holes saved relativity HVAC <mr.hvac@gmail.com> - 2016-03-31 08:27 -0700
          Re: How black holes saved relativity moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-03-31 15:52 +0000
          Re: How black holes saved relativity Odd Bodkin <bodkinodd@gmail.com> - 2016-03-31 11:58 -0500
            Re: How black holes saved relativity john <johnsefton288@gmail.com> - 2016-03-31 15:34 -0700
              Re: How black holes saved relativity Odd Bodkin <bodkinodd@gmail.com> - 2016-03-31 17:57 -0500
              Re: How black holes saved relativity moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-03-31 23:09 +0000
  Re: How black holes saved relativity vishnushelat@gmail.com - 2016-03-31 12:37 -0700
    Re: How black holes saved relativity "hanson" <hanson@quick.net> - 2016-03-31 14:01 -0700
    Re: How black holes saved relativity HVAC <mr.hvac@gmail.com> - 2016-03-31 15:24 -0700
      Re: How black holes saved relativity "hanson" <hanson@quick.net> - 2016-03-31 16:46 -0700
  Re: How black holes saved relativity xxein1@att.net - 2016-03-31 17:34 -0700

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