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Are We Living In A Black Hole?
One Universe at a Time ^ | 9/4/15 | Brian Koberlein

Posted on 09/05/2015 2:41:01 PM PDT by LibWhacker

Are We Living In A Black Hole?

// /

Here’s an idea, what if the universe and everything we see around us is actually inside a black hole?

Whenever I’m asked this question, what folks typically have in mind is that the universe began as an infinitely dense point, just like the singularity of a black hole, and because of cosmic expansion there’s a limit to how far we can observe, so maybe that’s like the event horizon. While it’s an interesting idea, things aren’t quite so simple.

To begin with, the universe did not begin with an explosion from a single point. It was definitely very hot and dense in its early period, but it didn’t begin as a singularity. In fact there is debate whether black holes themselves have singularities. So while there are similarities between the two, we can’t simply equate them.

The limit of what we observe (the size of the observable universe) also doesn’t match up with the hypothetical event horizon of a “cosmic” black hole. For any mass you can calculate what is known as the Schwarzschild radius, which is the radius of a simple black hole of that mass. The mass of the observable universe is on the order of 1054 kg, which gives a Schwarzschild radius about 5 times larger than that of the observable universe.

So maybe we’re just in a really big black hole, and we just see a part of it. Not really. Just because you can calculate a Schwarzschild radius that doesn’t mean an object is a black hole. Even if the Schwarzschild radius encloses all of your mass, it still isn’t necessarily a black hole. On a basic level the density of the observable universe is pretty uniform. If you don’t worry about cosmic expansion, then the radius of the observable universe increases at the speed of light with age, so the total mass of the observable increases with time. This is true in an expanding universe as well, but that’s a different story. The thing is, the Schwarzschild radius increases linearly with mass, but the enclosed mass of the observable universe increases with the radius cubed. As the observable universe increases over time, then the Schwarzschild radius eventually grows faster than the radius of the observable universe.

Some models propose "baby universes" forming from black holes in our universe.

Some models propose “baby universes” forming from black holes in our universe.

For a true black hole you can’t just calculate its size. You have to look at the overall structure. Our universe isn’t collapsing in on itself, it’s expanding at an ever increasing rate. So it doesn’t have the necessary structure to be the interior of a black hole. But there are some models that do propose that our universe was formed by the black hole of another universe. These models are very speculative, but generally propose that the super-dense interior of a black hole could create a “baby universe” that expands to become its own universe. Technically you could say this new universe is “in” the black hole that spawned it, but because of the bendable nature of space and time that’s not particularly meaningful. The new universe would in no way be limited by the size of the black hole, and would exist on its own once it formed.

So it’s an interesting idea to speculate about, but there is no evidence to support the idea that our universe is in a black hole.



TOPICS: Astronomy; Science
KEYWORDS: blackhole; cosmology; physics; stringtheory; universe
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1 posted on 09/05/2015 2:41:01 PM PDT by LibWhacker
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To: LibWhacker

Yep, we entered it on Jan. 20th, 2009.


2 posted on 09/05/2015 2:44:16 PM PDT by Robert DeLong (u)
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To: Robert DeLong

Yep! lol


3 posted on 09/05/2015 2:45:10 PM PDT by Fiddlstix (Warning! This Is A Subliminal Tagline! Read it at your own risk!(Presented by TagLines R US))
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To: LibWhacker

So the Sun is the middle of the known universe!!/s


4 posted on 09/05/2015 2:45:54 PM PDT by mountainlion (Live well for those that did not make it back.)
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To: LibWhacker

5 posted on 09/05/2015 2:45:59 PM PDT by dfwgator
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To: dfwgator

Shut up, little boy. Go back to the sandbox and play with your multi-coloured Legos./


6 posted on 09/05/2015 2:49:16 PM PDT by lee martell
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To: LibWhacker

Somewhere the Monads are getting restless.


7 posted on 09/05/2015 2:49:48 PM PDT by PIF (They came for me and mine ... now it is your turn ...)
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To: LibWhacker

Every college freshman develops this theory. Usually while listening to Pink Floyd.


8 posted on 09/05/2015 2:50:14 PM PDT by ClearCase_guy (Cruz is still my #1, but Trump is impressing the hell out of me.)
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To: LibWhacker

Yes, and it is called “The Communist Wealth Re-Distribution Plan”.


9 posted on 09/05/2015 2:52:52 PM PDT by Molon Labbie (Prep. Now. Live Healthy, take your Shooting Iron daily.)
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To: LibWhacker

Living in a country run by one


10 posted on 09/05/2015 2:57:03 PM PDT by bigbob
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To: LibWhacker; 6SJ7; AdmSmith; AFPhys; Arkinsaw; allmost; aristotleman; autumnraine; bajabaja; ...
Thanks LibWhacker. I've said so before, mostly joking -- but it does best fit the purported facts when viewed through the conventional models.

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11 posted on 09/05/2015 3:15:09 PM PDT by SunkenCiv (What do we want? REGIME CHANGE! When do we want it? NOW)
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To: LibWhacker
A collection Super-Duper Giant Black Hole that spew universes in different time/space continuum?

A collection Super-Duper Giant Black Hole that spew universes in different time/space continuum?

Wow ...was that Déjà vu I just experienced?

12 posted on 09/05/2015 3:16:20 PM PDT by TexasCajun (#BlackViolenceMatters)
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To: LibWhacker

Smells like it on burrito night.


13 posted on 09/05/2015 3:21:11 PM PDT by paintriot
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To: LibWhacker

Black hole?

More like a black hell.


14 posted on 09/05/2015 3:31:23 PM PDT by x1stcav (Leftism is like rust: It corrodes 24 hours a day until eradicated.)
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To: LibWhacker

when I get to heaven this will be one of the many questions I will have the answer too. Next will be who built the pryamids and why. then is Jimmy Hoffa really dead


15 posted on 09/05/2015 3:51:22 PM PDT by RginTN
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To: LibWhacker

Only if you are living in a feral-infested urban area.


16 posted on 09/05/2015 3:55:39 PM PDT by hal ogen (First Amendment or Reeducation Camp?)
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To: hal ogen
Or if you're a Raiders fan.


17 posted on 09/05/2015 3:56:34 PM PDT by dfwgator
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To: Robert DeLong

Plus 1!


18 posted on 09/05/2015 4:06:42 PM PDT by defconw (Fight all error, and do it with good humor, patience, kindness and love. -St. John Cantius)
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To: LibWhacker

I do know that as I age...

...time begins to flow far more quickly...and accelerates. Time, like a river in its everlasting decent becomes a whitewater rage at its narrowest points. I feel I’m entering the neck of life’s hour glass. As it is now, a day goes by like an hour, a week seems like a day... a year like a couple of months, one warm...one cold. This “quickening” has made me very humble.... to prioritized those who are most important in my life... and to discard all those who waste my life.

God is great...Life is Good...and you are so Beautiful. :)


19 posted on 09/05/2015 4:46:57 PM PDT by Musketeer
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To: LibWhacker

“then the radius of the observable universe increases at the speed of light with age”

I believe that would only be true if our universe is unbounded.


20 posted on 09/05/2015 5:21:01 PM PDT by unlearner (RIP America, 7/4/1776 - 6/26/2015, "Only God can judge us now." - Claus Von Stauffenberg / Valkyrie)
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