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Groups > sci.physics > #647155

Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity.

From Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups sci.physics, sci.astro, sci.physics.relativity
Subject Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity.
Followup-To sci.astro
Date 2017-08-25 14:34 +0200
Organization PointedEars Software (PES)
Message-ID <1698582.taCxCBeP46@PointedEars.de> (permalink)
References (4 earlier) <Jeff-Relf.Me@Aug.23--9.48am.Seattle.2017> <onkrta$mmu$1@pcls7.std.com> <Jeff-Relf.Me@Aug.23--2.58pm.Seattle.2017> <onl1h0$pm7$1@pcls7.std.com> <onm5e7$s7h$1@gioia.aioe.org>

Cross-posted to 3 groups.

Followups directed to: sci.astro

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Martin Brown wrote:

> On 24/08/2017 00:01, Michael Moroney wrote:
>> Jeff-Relf.Me  @. writes:
>>>   Sagittarius A* is THOUGHT to be the location of a supermassive black
>>>   hole
>>>     https://en.wikipedia.org/wiki/Sagittarius_A*
>> 
>>> "Thought", not "known".
>> 
>> "Thought" to a rather high degree of certainty.
>> 
>> Orbits of multiple stars are tracked orbiting "something"
>> with a mass of about 4.1 million solar masses but a radius of less than
>> 45 AU (otherwise the star S14 would collide with it).
>> 
>> 
https://upload.wikimedia.org/wikipedia/commons/c/c1/Galactic_centre_orbits.svg
> 
> Wiki

The name is of the source is _Wikipedia_.  Instead, “wiki” is now an 
umbrella term for a live-editable community-maintained online source
(from “wiki”, the Hawaiian word for “quick”).

> claims Sgr A

The name of the astronomical object is obviously S(a)g(itta)r(ius) A_*_ 
(emphasis mine).

> has Rs ~ 1.3x10^10 M which I make to be about 80AU

What are you talking about?

The symbol for radius is usually a lowercase “r”.

The symbol for the SI unit of metre (or meter) is “m”, not “M”.  [“M” is 
reserved as the unit prefix for “mega”, from greek «μέγας» /megas/ „great“, 
meaning one million times the unit.]

The SI unit prefix “k” (for “kilo”, from Greek «χίλιοι» /khílioi/ „a 
thousand“) means 1000 times the unit:

  1 km = 1000 m.

So

  1.3 × 10¹⁰ m = 1.3 × 10⁷ km

which is *much less* than

  1 AU ≈ 150'000'000 km = 150 × 10⁸ km = 1.5 × 10¹⁰ km.

(1 AU is the average distance Terra–Sol.)

> (in the section on Schwarzchild radii

(Karl) _Schwarzschild_

> - which is suspect is out of date)

It is not.  The Schwarzschild radius of a non-rotating, uncharged 
(Schwarzschild) black hole (BH) is

  rₛ = 2 G M∕c²,

where G is Newton’s gravitational constant, and M is the mass of the black 
hole.  A mass of

  M = 4.1 × 10⁶ M☉ ≈ 8.153 × 10³⁶ kg,

where the mass of Sol (or solar masses) is

  M☉ ≈ 1.988435 × 10³⁰ kg,

corresponds to a Schwarzschild radius of

  rₛ ≈ 1.211 × 10¹⁰ m = 1.211 × 10⁷ km ≈ 0.08094 AU

The is very close to the aforementioned 1.3 × 10¹⁰ m.

See also: 
<http://www.wolframalpha.com/input/?i=Schwarzschild+radius&dataset=>
 
> (although the page on Sgr A itself says 4.1M sun and about 45AU)

You are confusing the radius of the region surrounding the assumed black 
hole with the Schwarzschild radius of the black hole, whereas the former is 
much larger.  Note that for such a BH, the Schwarzschild radius is the 
radius beyond which we can have *no* information instead (as it *is* the 
radius of the *event horizon*).

> Star S14 must be getting awfully close to grazing the event horizon.

That is possible, but not based on your argument, but based on the diagram.

For a Schwarzschild BH, the outer event horizon is the surface of a sphere 
that has the Schwarzschild radius as its radius.  45 AU, the radius of the 
space in which S14 is described to be orbiting, is not anywhere near 
0.08 AU.
 
-- 
PointedEars

Twitter: @PointedEars2
Please do not cc me. / Bitte keine Kopien per E-Mail.

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Thread

For Sefton, on whether gravity is ever infinite or not. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-18 14:54 -0500
  Re: For Sefton, on whether gravity is ever infinite or not. Edward Prochak <edprochak@gmail.com> - 2017-08-18 13:01 -0700
    Re: Black Holes violate the Heisenberg Uncertainty Principle. Tom Roberts <tjroberts137@sbcglobal.net> - 2017-08-18 20:26 -0500
      Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-18 23:07 -0700
        Re: Take your own advice, Tom Roberts. benj <nobody@gmail.com> - 2017-08-19 03:26 -0400
          Re: Take your own advice, Tom Roberts. Arindam Banerjee <banerjeeadda1234@gmail.com> - 2017-08-21 06:05 -0700
          Re: Take your own advice, Tom Roberts. Serg io <invalid@invalid.com> - 2017-08-21 09:26 -0500
            Re: Take your own advice, Tom Roberts. Serg io <invalid@invalid.com> - 2017-08-21 09:34 -0500
        Re: Take your own advice, Tom Roberts. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-21 08:18 -0500
          Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-21 06:53 -0700
            Re: Take your own advice, Tom Roberts. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-21 15:50 -0500
              Re: Take your own advice, Tom Roberts. "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-08-21 14:50 -0700
                Re: Take your own advice, Tom Roberts. "hanson" <hanson@quick.net> - 2017-08-21 15:39 -0700
              Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-21 15:50 -0700
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-21 15:59 -0700
                Re: Take your own advice, Tom Roberts. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-21 23:42 +0000
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-21 17:16 -0700
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-21 18:04 -0700
                Re: Take your own advice, Tom Roberts. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-22 02:24 +0000
                Re: Take your own advice, Tom Roberts. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-22 01:18 +0000
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-21 19:09 -0700
                Re: Take your own advice, Tom Roberts. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-22 02:39 +0000
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-21 20:00 -0700
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-21 20:40 -0700
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-21 20:49 -0700
                Re: Take your own advice, Tom Roberts. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-22 13:49 +0000
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-22 14:58 -0700
                Re: Take your own advice, Tom Roberts. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-22 23:35 +0000
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-22 17:06 -0700
                Re: Take your own advice, Tom Roberts. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-23 00:43 +0000
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-22 18:03 -0700
                Re: Take your own advice, Tom Roberts. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-23 01:34 +0000
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-22 19:32 -0700
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-22 19:50 -0700
                Re: Take your own advice, Tom Roberts. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-23 09:02 -0500
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-23 13:20 -0700
                Re: Take your own advice, Tom Roberts. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-23 16:38 -0500
                Re: Take your own advice, Tom Roberts. Edward Prochak <edprochak@gmail.com> - 2017-08-23 13:46 -0700
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-23 13:54 -0700
                Re: Take your own advice, Tom Roberts. Edward Prochak <edprochak@gmail.com> - 2017-08-23 14:38 -0700
                Thermodynamics, and its flipside ( gravity ), define everything. john <johnsefton288@gmail.com> - 2017-08-23 15:32 -0700
                Thermodynamics, and its flipside ( gravity ), define everything. john <johnsefton288@gmail.com> - 2017-08-23 15:54 -0700
                Re: Thermodynamics, and its flipside ( gravity ), define everything. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-24 10:24 -0500
                Re: Thermodynamics, and its flipside ( gravity ), define everything. john <johnsefton288@gmail.com> - 2017-08-24 09:10 -0700
                Re: Thermodynamics, and its flipside ( gravity ), define everything. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-24 17:09 +0000
                Re: Thermodynamics, and its flipside ( gravity ), define everything. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-24 12:14 -0500
                Re: Thermodynamics, and its flipside ( gravity ), define everything. john <johnsefton288@gmail.com> - 2017-08-24 11:41 -0700
                Re: Thermodynamics, and its flipside ( gravity ), define everything. john <johnsefton288@gmail.com> - 2017-08-24 15:05 -0700
                Re: Thermodynamics, and its flipside ( gravity ), define everything. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-24 22:10 +0000
                Re: Thermodynamics, and its flipside ( gravity ), define everything. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-24 22:07 +0000
                Re: Thermodynamics, and its flipside ( gravity ), define everything. Edward Prochak <edprochak@gmail.com> - 2017-08-25 08:31 -0700
                Re: Take your own advice, Tom Roberts. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-23 16:39 -0500
                Re: Take your own advice, Tom Roberts. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-22 13:47 +0000
                Re: Take your own advice, Tom Roberts. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-22 13:53 +0000
                Re: Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-22 07:51 -0700
                Re: Take your own advice, Tom Roberts. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-22 15:35 +0000
                Re: Take your own advice, Tom Roberts. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-22 08:25 -0500
                Re: Take your own advice, Tom Roberts. benj <benj@nobody.net> - 2017-08-22 17:58 -0400
                Re: Take your own advice, Tom Roberts. benj <nobody@gmail.com> - 2017-08-21 21:05 -0400
                Re: Take your own advice, Tom Roberts. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-22 01:18 +0000
                Re: Take your own advice, Tom Roberts. benj <benj@nobody.net> - 2017-08-22 18:00 -0400
                Re: Take your own advice, Tom Roberts. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-22 23:35 +0000
            Re: Take your own advice, Tom Roberts. Arindam Banerjee <banerjeeadda1234@gmail.com> - 2017-08-23 02:34 -0700
              Re: Take your own advice, Tom Roberts. Edward Prochak <edprochak@gmail.com> - 2017-08-23 13:51 -0700
      Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-18 23:15 -0700
        Take your own advice, Tom Roberts. john <johnsefton288@gmail.com> - 2017-08-18 23:22 -0700
        Re: Take your own advice, Tom Roberts. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-19 11:16 +0000
          Odd Bodkin gets the Nobel prize, along with Bert. NobelPrize.ORG  @. - 2017-08-19 07:45 -0700
            Odd Bodkin gets the Nobel prize, along with Bert. john <johnsefton288@gmail.com> - 2017-08-19 08:32 -0700
              Re: Odd Bodkin gets the Nobel prize, along with Bert. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-19 17:46 +0000
                Re: Odd Bodkin gets the Nobel prize, along with Bert. Serg io <invalid@invalid.com> - 2017-08-19 14:08 -0500
                Re: Odd Bodkin gets the Nobel prize, along with Bert. john <johnsefton288@gmail.com> - 2017-08-19 17:20 -0700
                Re: Odd Bodkin gets the Nobel prize, along with Bert. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-20 00:34 +0000
                Re: Odd Bodkin gets the Nobel prize, along with Bert. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-20 00:36 +0000
                Re: Odd Bodkin gets the Nobel prize, along with Bert. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-20 01:33 +0000
                Re: Odd Bodkin gets the Nobel prize, along with Bert. poraty350@gmail.com - 2017-08-19 21:04 -0700
                Re: Odd Bodkin gets the Nobel prize, along with Bert. john <johnsefton288@gmail.com> - 2017-08-20 10:07 -0700
                Re: Odd Bodkin gets the Nobel prize, along with Bert. "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-08-20 10:57 -0700
                Re: Odd Bodkin gets the Nobel prize, along with Bert. "hanson" <hanson@quick.net> - 2017-08-20 11:17 -0700
                Re: Odd Bodkin gets the Nobel prize, along with Bert. "hanson" <hanson@quick.net> - 2017-08-20 11:19 -0700
                Re: Odd Bodkin gets the Nobel prize, along with Bert. john <johnsefton288@gmail.com> - 2017-08-20 11:00 -0700
                Re: Odd Bodkin gets the Nobel prize, along with Bert. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-20 18:29 +0000
                Re: Odd Bodkin gets the Nobel prize, along with Bert. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-20 18:26 +0000
                Re: Odd Bodkin gets the Nobel prize, along with Bert. john <johnsefton288@gmail.com> - 2017-08-20 11:58 -0700
                Re: Odd Bodkin gets the Nobel prize, along with Bert. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-21 16:39 +0000
                Black Holes are math kook babble john <johnsefton288@gmail.com> - 2017-08-21 11:46 -0700
                Re: Retarded precessing spinny things are kook babble moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-21 20:07 +0000
                Re: Odd Bodkin gets the Nobel prize, along with Bert. Lofty Goat <rlwatkins@gmail.com> - 2017-08-20 15:09 -0500
                Re: Odd Bodkin gets the Nobel prize, along with Bert. john <johnsefton288@gmail.com> - 2017-08-20 14:13 -0700
                Re: Odd Bodkin gets the Nobel prize, along with Bert. Serg io <invalid@invalid.com> - 2017-08-20 18:07 -0500
                Re: Odd Bodkin gets the Nobel prize, along with Bert. john <johnsefton288@gmail.com> - 2017-08-20 16:31 -0700
                Re: Odd Bodkin gets the Nobel prize, along with Bert. Serg io <invalid@invalid.com> - 2017-08-21 08:33 -0500
                Re: Odd Bodkin gets the Nobel prize, along with Bert. john <johnsefton288@gmail.com> - 2017-08-21 07:00 -0700
            Re: Odd Bodkin gets the Nobel prize, along with Bert. Chris Ahlstrom <OFeem1987@teleworm.us> - 2017-08-19 12:45 -0400
              Re: Odd Bodkin gets the Nobel prize, along with Bert. chrisv <chrisv@nospam.invalid> - 2017-08-21 07:04 -0500
      Re: Black Holes violate the Heisenberg Uncertainty Principle. Tom Roberts <tjroberts137@sbcglobal.net> - 2017-08-21 18:00 -0500
        Re: More data, from more observers, is needed. Tom Roberts <tjroberts137@sbcglobal.net> - 2017-08-23 10:41 -0500
          Re: We can't see Sgr A* PROPER, directly. "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-08-23 11:55 -0700
            Re: We can't see Sgr A* PROPER, directly. "hanson" <hanson@quick.net> - 2017-08-24 00:03 -0700
          Re: We can't see Sgr A* PROPER, directly. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-23 21:26 +0000
            Re: We can't see Sgr A* PROPER, directly. john <johnsefton288@gmail.com> - 2017-08-23 14:32 -0700
              Re: We can't see Sgr A* PROPER, directly. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-23 16:48 -0500
              Re: We can't see Sgr A* PROPER, directly. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-23 22:12 +0000
            Re: We can't see Sgr A* PROPER, directly. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-23 16:46 -0500
            Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-23 23:01 +0000
              Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. Martin Brown <'''newspam'''@nezumi.demon.co.uk> - 2017-08-24 10:14 +0100
                Re: A TRUE singularity has infinite precision, not +/- 45 AU. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-24 17:04 +0000
                Re: There is no evidence that TRUE black holes exist, none. Double-A <double-a3@hush.com> - 2017-08-24 15:40 -0700
                Re: There is no evidence that TRUE black holes exist, none. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-25 20:04 +0200
                Re: Slowing lased photons to near ZERO meters/second. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-25 20:05 +0200
                Re: Starting/Stopping light. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-25 21:45 +0200
                Posting an email address to Usenet is just wrong. Jeff-Relf.Me  @. - 2017-08-25 17:55 -0700
                Re: Posting an email address to Usenet is just wrong. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-26 03:23 +0200
                Give it your best shot, Thomas Lahn. Jeff-Relf.Me  @. - 2017-08-25 19:08 -0700
                Re: Give it your best shot, ****** ****. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-26 14:15 +0200
                Thomas Lahn would ban URL's. Jeff-Relf.Me  @. - 2017-08-26 13:36 -0700
                Re: ****** **** would ban URL's. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-27 01:46 +0200
                Re: Thomas Lahn's GoogleGroups Spam Remover. Snit <usenet@gallopinginsanity.com> - 2017-08-28 15:55 -0700
                Google Groups spam filter (was: Thomas Lahn's GoogleGroups Spam Remover.) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-31 18:04 +0200
                If this Wikipedia article is wrong, please fix it. Jeff-Relf.Me  @. - 2017-08-25 18:39 -0700
                Slow light (was: If this Wikipedia article is wrong, please fix it.) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-26 03:55 +0200
                Viewed from earth, everything near an ideal event horizon appears frozen. Jeff-Relf.Me  @. - 2017-08-25 19:47 -0700
                Re: If this Wikipedia article is wrong, please fix it. benj <nobody@yahoo.com> - 2017-08-26 01:52 -0400
                Re: kNode hasn't heard of MIME/HTML ? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-26 03:47 +0200
                The DEFAULT "Subject:" line is NEITHER mandatory or desirable. Jeff-Relf.Me  @. - 2017-08-25 19:29 -0700
                Re: The DEFAULT "Subject:" line is NEITHER mandatory or desirable. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-26 15:36 +0000
                Usenet isn't Wikipedia; threads branch and morph, topics change. Jeff-Relf.Me  @. - 2017-08-26 11:56 -0700
                Re: Usenet isn't Wikipedia; threads branch and morph, topics change. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-27 04:31 +0000
                Re: There is no evidence that TRUE black holes exist, none. The Starmaker <starmaker@ix.netcom.com> - 2017-08-25 12:28 -0700
                Re: There is no evidence that TRUE black holes exist, none. john <johnsefton288@gmail.com> - 2017-08-25 12:44 -0700
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-25 14:34 +0200
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. john <johnsefton288@gmail.com> - 2017-08-25 06:22 -0700
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-25 16:14 +0200
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. john <johnsefton288@gmail.com> - 2017-08-25 07:18 -0700
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. john <johnsefton288@gmail.com> - 2017-08-25 07:49 -0700
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-25 18:25 +0200
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. Edward Prochak <edprochak@gmail.com> - 2017-08-25 10:44 -0700
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-25 13:05 -0500
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-25 16:09 +0000
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-25 15:37 +0000
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. john <johnsefton288@gmail.com> - 2017-08-25 08:51 -0700
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-25 13:01 -0500
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-25 19:22 +0200
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-25 18:48 +0000
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. john <johnsefton288@gmail.com> - 2017-08-25 12:22 -0700
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. john <johnsefton288@gmail.com> - 2017-08-25 12:25 -0700
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-25 21:27 +0200
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-25 21:54 +0000
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-26 03:01 +0200
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-26 03:31 +0000
                Re: Sgr* isn't even a "black hole", much less a PRECISELY known singularity. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-25 21:52 +0200
      Re: Take your own advice, Tom Roberts. Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-09-04 14:34 -0400
        Re: Take your own advice, Tom Roberts. Ethel Ocallaghan <unlgclo@awlwaac.ag> - 2017-09-05 11:40 +0000
        Re: "Black Holes" are forever a notion, never measured. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-09-05 14:04 +0000
    Re: For Sefton, on whether gravity is ever infinite or not. poraty350@gmail.com - 2017-08-19 00:00 -0700
      Re: For Sefton, on whether gravity is ever infinite or not. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-21 08:18 -0500
    Re: Black Holes violate the Heisenberg Uncertainty Principle. Double-A <double-a3@hush.com> - 2017-08-20 16:01 -0700
    Re: Black Holes violate the Heisenberg Uncertainty Principle. pcardinale@volcanomail.com - 2017-08-21 12:54 -0700
  For Sefton, on whether gravity is ever infinite or not. john <johnsefton288@gmail.com> - 2017-08-18 14:44 -0700
    Re: For Sefton, on whether gravity is ever infinite or not. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-18 22:15 +0000
  Re: For Sefton, on whether gravity is ever infinite or not. "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-08-18 15:26 -0700
    Re: For Sefton, on whether gravity is ever infinite or not. "hanson" <hanson@quick.net> - 2017-08-18 18:54 -0700
  Re: For Sefton, on whether gravity is ever infinite or not. Lofty Goat <rlwatkins@gmail.com> - 2017-08-18 21:06 -0500
  Re: For Sefton, on whether gravity is ever infinite or not. "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-08-25 10:25 -0700
    Re: For Sefton, on whether gravity is ever infinite or not. "hanson" <hanson@quick.net> - 2017-08-25 10:55 -0700
    Re: For Sefton, on whether gravity is ever infinite or not. Double-A <double-a3@hush.com> - 2017-08-25 14:17 -0700
      Re: For Sefton, on whether gravity is ever infinite or not. "hanson" <hanson@quick.net> - 2017-08-25 15:27 -0700
        Re: For Sefton, on whether gravity is ever infinite or not. Double-A <double-a3@hush.com> - 2017-08-25 15:37 -0700
          Re: For Sefton, on whether gravity is ever infinite or not. "hanson" <hanson@quick.net> - 2017-08-25 15:50 -0700
  For Sefton, on whether gravity is ever infinite or not. john <johnsefton288@gmail.com> - 2017-08-25 16:29 -0700
    For Sefton, on whether gravity is ever infinite or not. john <johnsefton288@gmail.com> - 2017-08-25 17:03 -0700
      Re: For Sefton, on whether gravity is ever infinite or not. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-26 01:53 +0000
    Re: For Sefton, on whether gravity is ever infinite or not. Odd Bodkin <bodkinodd@gmail.com> - 2017-08-26 01:53 +0000

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