Because black holes are actually white holes.

>>16952720
https://files.catbox.moe/v3zf80.pdf

>>16952687
if so, where is the singularity?

>>16952687
The mass is spread out like a gaping anus that gaped too wide. A black hole can have any mass as long as it's packed densely enough.

>>16952687
Est. mass of universe - 10e54 kg
Est. Schwarzschild radius of universe - 7.8 ly
Est. comoving radius of universe - 4.7E10 ly
That's why we're not a black hole right now

>>16952921
Yup, OP is an idiot. The better question is how come the universe didn't collapse into a black hole when it was younger and much, much smaller.

>>16952934
what if it collapsed and we are inside it now

>>16953076
Nothing changes. It would have to be one strange blackhole, especially since every astronomical observation ever made lines up with us not being inside a blackhole.

>>16952921
>>16952934
>Est. Schwarzschild radius of universe - 7.8 ly
No? Where the fuck did you get this? It's 2GM/c^2.

2(6.674e-11)(10^54) = 1.3348e44 / (2.998e8)^2 = 1.4850906e27m = 156974200280 ly

That's ~1.57e11 ly. Which is bigger than 4.7e10 ly.

>>16953100
>every astronomical observation ever made lines up with us not being inside a blackhole
do we really know how astronomical observations work behind a black hole's event horizon though?

>>16953156
If we didn't then GR would no longer work and all the observations wouldn't match what we would expect.

>>16953165
they don't

A black hole is a solution to the Einstein field equation. Its not just a function of mass and density. That mass has to uniformly distributed in a sphere with nothing outside to satisfy the black hole solution assumptions.

>>16952934
Because its was that dense everywhere. Every point would have equal claim to be the singularity

>>16953156
Yes. The solution that tells you blackholes exists tell you the metric inside the black hole. And its not the FLWR metric.

>>16953217
>That mass has to uniformly distributed in a sphere with nothing outside to satisfy the black hole solution assumptions.
No it doesn't.

>>16952687
Universe is inside a black hole. It just doesn't really have any effect on us from our perspective.

>>16952820
Why didn't it collapse into one giant black hole when Universe was densely packed?

>>16953267
Because space itself was also jammed in there. Anselm's ontological God created the universe, not Euclid

>>16953237
Yes it does. The Schwatzchild solution describes spherically symmetrical mass, vacuum outside the black hole, and a cosmological constant of zero.

>>16953267
Because that isn't what the Einsteins field equations do for a uniformly distributed mass.

>>16953494
Einstein fucked his cousin

>>16953493
The Schwarzschild exterior is only a function of total mass and doesn't care how that mass is distributed internally, that's literally whole point. You don't need uniform density, you don't need a sphere of mass, the exterior metric is the same regardless of what the interior looks like. This has nothing to do with the interior of a black hole in the first place. Dumbass spherical cow retard.

>>16955179
t. Retard.

The total mass doesn't even appear in the Einstein field equation. Its the mass distribution. And Schwartchild describes a radially symmetric mass surrounded by vaccum with zero cosmological constant.

>>16952818
All directions in spacetime lead to the singularity.

>>16952687
We are.
>>16952720
That is correct. It shows up as a white hole surrounded by black matter or energy.
>>16952934
We collapsed into a black hole around the year 2005.

>>16958620
Only if spacetime is highly curved.
Observations show that the curvature of the geometry of the universe averages to zero on large scales.

>>16952687
To prove that you don't really understand what you're even asking, here's a question for you to answer

What would be the difference if the universe was not just a black hole? What do you think would change, one way or the other?

>>16958828
What is the singularity? Death?

Test

>>16952687
The universe started out as a singularity, how is it proposed it state changed?