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Re: The Kerr black hole

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Tom Roberts wrote:

> On 9/27/18 1:57 AM, JanPB wrote:
>> On Tuesday, September 25, 2018 at 9:25:16 PM UTC-7, mitchr...@gmail.com
>> wrote:
>>> Black holes aren't real Jan...
>> 
>> This is most likely correct.
> 
> I disagree. Black holes are most likely real, because astronomers have
> observed many objects for which the only models we have are black holes,
> and those models agree very well with the observations. This includes
> several gravitational-wave events, Sgr A*, quasars, and compact
> super-massive objects observed at the centers of most galaxies.
> Whether the singularity inside a black hole "exists" is a rather
> different question; I suspect they probably don't "exist" (whatever that
> might mean for a singularity), because there is no expectation that GR
> remains valid in such regions. I also suspect that we will never know
> this for sure, because those singularities are cloaked by a horizon.

In principle you can escape the horizon, using the kinetic energy from the 
fall, plus the payload carrying propellant. 

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The Kerr black hole mitchrae3323@gmail.com - 2018-09-25 18:46 -0700
  Re: The Kerr black hole JanPB <filmart@gmail.com> - 2018-09-25 20:48 -0700
    Re: The Kerr black hole mitchrae3323@gmail.com - 2018-09-25 21:25 -0700
      Re: The Kerr black hole JanPB <filmart@gmail.com> - 2018-09-26 23:57 -0700
        Re: The Kerr black hole Tom Roberts <tjroberts137@sbcglobal.net> - 2018-09-28 10:11 -0500
          Re: The Kerr black hole JanPB <filmart@gmail.com> - 2018-09-28 12:44 -0700
          Re: The Kerr black hole Hilton Packett <wod@wcothr.ce> - 2018-09-28 20:36 +0000
            Re: The Kerr black hole Tom Roberts <tjroberts137@sbcglobal.net> - 2018-09-28 16:37 -0500
              Re: The Kerr black hole Hilton Packett <wod@wcothr.ce> - 2018-09-28 21:55 +0000
              Re: The Kerr black hole JanPB <filmart@gmail.com> - 2018-09-28 15:02 -0700
                Re: The Kerr black hole Hilton Packett <wod@wcotahr.ce> - 2018-09-29 23:57 +0000
                Re: The Kerr black hole JanPB <filmart@gmail.com> - 2018-09-29 21:31 -0700
                Re: The Kerr black hole Hilton Packett <wod@wcotahr.ce> - 2018-09-30 16:20 +0000
                Re: The Kerr black hole moroney@world.std.spaamtrap.com (Michael Moroney) - 2018-09-30 17:08 +0000
                Re: The Kerr black hole Hilton Packett <wod@wcotahr.ce> - 2018-09-30 21:29 +0000
                Re: The Kerr black hole "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2018-09-30 09:44 -0700
        Re: The Kerr black hole Tom Roberts <tjroberts137@sbcglobal.net> - 2018-09-28 10:11 -0500
          Re: The Kerr black hole Hilton Packett <wod@wcotahr.ce> - 2018-09-30 16:43 +0000

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