Could Our Universe Be Inside a Black Hole?

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The discussion explores the theory that our universe could exist within a black hole, stemming from the nature of a black hole's singularity, which is theorized to have infinite density and gravity. The idea suggests that if gravity is infinitely strong, it could potentially "suck in" space itself, leading to the possibility of multiple universes within black holes. However, participants note that the concept of gravity does not literally "suck" space, indicating a misunderstanding of gravitational forces. The conversation emphasizes the complexity of black hole physics, which goes beyond simple Newtonian descriptions. Overall, the theory presents intriguing questions about the relationship between black holes and the universe, despite some misconceptions.
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Let me first say I am in high school and don't understand very much calculus or advanced physics. But through my independent work i have created a theory in which i personally can not find any flaws with. I would ask for constructive critisms on this theory. thanks!

It is my understanding that a black holes singularity has an extreme dense matter "ball" that creates such intense gravity that light itself cannot exscape. With this known we know that the gravity is so stong that the singularity is constinly getting denser on its own gravity. So the density of the singularity has a density of infinity. If the singularity is infinitly dense then the gravity around the black hole is also infinite.

So with the gravity being infinitly strong then it would have the ablity (this is were I am not so sure) to suck in space its self. Becouse the gravity is infinite then the space being sucked in must also be infinite. Now the big bang theory suggests a very small singularity for it to work properly thus is it possible that the known universe is literally inside a black hole? just on a much much smaller scale than that of what space would be on the outside? Also that there are universes inside our universes black holes?

Im not sure how well i have explained this if you have any questions please just ask..
 
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Nel said:
So with the gravity being infinitly strong then it would have the ablity (this is were I am not so sure) to suck in space its self.

Your speculations were not absolutely wrong up to that point even what happens inside the BH is much more complicated. You describe it in a more 'Newtonian' way and for the non-rotating BH.

Now let's stop at the sentence I quoted. Gravity does not "suck" space.
 
https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the vacuum as the actual vacuum, and not the medium through which the light propagates with the speed lower than ##({\epsilon_0\mu_0})^{-1/2}##? I'm asking this in context of the calculation of the observable universe radius, where the time integral of the inverse of the scale factor is multiplied by the constant speed of light ##c##.
Why was the Hubble constant assumed to be decreasing and slowing down (decelerating) the expansion rate of the Universe, while at the same time Dark Energy is presumably accelerating the expansion? And to thicken the plot. recent news from NASA indicates that the Hubble constant is now increasing. Can you clarify this enigma? Also., if the Hubble constant eventually decreases, why is there a lower limit to its value?

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