So we are, in fact, in a pocket universe?

[collins355]

Is our universe trapped inside a black hole? This James Webb Space Telescope discovery might blow your mind

"I think that the simplest explanation of the rotating universe is the universe was born in a rotating black hole."

www.space.com

 

[Condottiere]

Or a soap bubble, amongst other soap bubbles.

 

[G'Naakbusters]

Some of us are indeed lizard people (with wings), noted.

I will attempt demasking as many people as possible until we locate Yaskoydray and can return to the main universe.

I was considering doing that anyway, but now Science validates me. Good news.

 

[Jame Rowe]

Some of us are indeed lizard people (with wings), noted.

I will attempt demasking as many people as possible until we locate Yaskoydray and can return to the main universe.

I was considering doing that anyway, but now Science validates me. Good news.

And then we can tell him NOT to start that war. Or empress wave.
Or was that express boat?

 

[Geir]

We all live in a Bag of Holding™
Sorry, wrong game.

So a few months back (not knowing that this was already thought of decades ago) I did this handwavy thing to a couple of people who just stared at me:
From my research on the WBH, I learned that the diameter of a black hole is about 6 km per solar mass, increasing linearly. So... says Geir, there was this Big Bang thing, and then Inflation, where at the end of it, the whole size of the universe was about that of a beachball (whether that's a volley-ball sized object or a bigger one that you just bat around hardly matters here) and even if you just account for Higgs mass (where three quarks is only about 1% the mass of the proton, because... gluons and strong force and stuff) then well, the event horizon ought to be millions or billions of light years out there, so how can we not be inside a black hole?

But what do I know? I dropped Engineering Physics after two years and graduated as a History major (Why? because among other things, all the math you needed to know was there was no Year 0... well, except in Cambodia and that didn't turn out so well).

 

[Sigtrygg]

We just don't know.

Why did the singularity that existed at the moment of creation not remain a "black hole"?

How did the universe a moment after creation not become a "black hole" since the energy density and size would allow it.

After inflation kicked in the universe still meets the conditions to be a black hole.

The answer... our universe is a construct on the surface of a black hole, we are the holographic universe.

Or there may be turtles and elephants involved.

 

[AndrewW]

Maybe we need

We just don't know.

Maybe we need Dr. Hans Reinhardt to find out.

 

[WHULorigan]

Maybe we need

Maybe we need Dr. Hans Reinhardt to find out.

He could team up with Dr. Queller and Dr. Strangelove.

 

[WHULorigan]

We just don't know.

Why did the singularity that existed at the moment of creation not remain a "black hole"?

How did the universe a moment after creation not become a "black hole" since the energy density and size would allow it.

After inflation kicked in the universe still meets the conditions to be a black hole.

Or maybe the initial conditions supported the formation of a White Hole.

Or there may be turtles and elephants involved.

Maybe they were Uplifted Turtles and Elephants . . .

 

[WHULorigan]

From my research on the WBH, I learned that the diameter of a black hole is about 6 km per solar mass, increasing linearly. So... says Geir, there was this Big Bang thing, and then Inflation, where at the end of it, the whole size of the universe was about that of a beachball (whether that's a volley-ball sized object or a bigger one that you just bat around hardly matters here) and even if you just account for Higgs mass (where three quarks is only about 1% the mass of the proton, because... gluons and strong force and stuff) then well, the event horizon ought to be millions or billions of light years out there, so how can we not be inside a black hole?

We just don't know.

Why did the singularity that existed at the moment of creation not remain a "black hole"?

How did the universe a moment after creation not become a "black hole" since the energy density and size would allow it.

After inflation kicked in the universe still meets the conditions to be a black hole.

But my understanding is that this is only a problem in a non-flat spacetime. If the universe is "flat", then it is potentially infinite in scope and the initial density is immense "everywhere" and it cancels out, the density eventually decreasing everywhere thru spacetime expansion/inflation.

But that is of course an a priori presupposition of the initial conditions, and not a required precondition.

 

[MonsterX]

Or a soap bubble, amongst other soap bubbles.

if the unimaginably vast universe we see is just one soap bubble among many, how big is the bath tub? and what happens when someone uncorks the drain?

 

[WHULorigan]

if the unimaginably vast universe we see is just one soap bubble among many, how big is the bath tub? and what happens when someone uncorks the drain?

If that model is correct, then the "bubbles" are regions where the Cosmic Inflation of Spacetime (of the type that reigned in the first fractions of a nanosecond after the Big Bang) has "phase-changed" or "dropped-out" and ceased its inflationary behavior in favor of normal expansion (like what we currently observe within our local "bubble-region". Other bubble regions theoretically also would have phase-changed or dropped out randomly as well, but those regions are "cosmically inflating" away from us at far faster than lightspeed and so are isolated from us. Think of it like Swiss cheese, in which the holes in the cheese are the bubble universes (and they are expanding with time), but the cheese itself is expanding much faster.

Also, those other bubble universes (depending on local conditions at the time of the phase change) need not have ended up with the same fundamental physical constants that we have in our "bubble", and might otherwise be inimical to us environmentally, physics-wise (especially if one of those bubbles happens to be near enough that inflation is insufficient to carry it far enough away before our two bubbles open up into each other, each with different laws.

 

[Sigtrygg]

There is a far deeper question - what are the bubbles expanding within and what lies between the bubbles?

 

[Condottiere]

Dark matter?

 

[Geir]

There is a far deeper question - what are the bubbles expanding within and what lies between the bubbles?

In the US, depending on region, either 'soda' or 'pop', or sometimes 'soda pop'.

 

[Arkathan]

In the US, depending on region, either 'soda' or 'pop', or sometimes 'soda pop'.

There are pockets where everything is Coke, without regard for the flavor or the maker.
You wanna Coke?
Sure whatcha got?
Mt.Dew, Dr. Pepper and RC

 

[WHULorigan]

In the US, depending on region, either 'soda' or 'pop', or sometimes 'soda pop'.

DON'T shake the Universe . . .

 

[Condottiere]

Pantheon.

 

[WHULorigan]

There is a far deeper question - what are the bubbles expanding within and what lies between the bubbles?

I suppose it would presumably be whatever "excited" or "inflationary" spacetime is, as it was in the inflationary epoch shortly after the Big Bang.

Of course, that itself isn't necessarily much of a satisfactory conceptual answer . . .

 

[To Tha Moon!]

Why did the singularity that existed at the moment of creation not remain a "black hole"?

For the same reason that supernovas happen. There was either a mass or density threshold, or both, that was crossed - probably with just one single atom too many.

So the object pre-Big Bang would have been a universe-sized black hole. And it ruptured releasing its Quarks or Quantum level degenerate matter outward.