What Are the Different Theories on the Creation of Our Universe?

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The discussion explores various theories regarding the creation of the universe, including the idea that it is an experiment or a simulation, though some participants reject the hologram theory. There is a belief that our universe may be a product of a more powerful universe, suggesting an ongoing cycle of creation and destruction. The conversation emphasizes the notion that Earth will eventually end as part of this experimental process. Participants are encouraged to share established theories rather than engage in idle speculation. The topic invites a deeper examination of the origins and fate of the universe.
jessicadambra
I recently saw the movie Avatar, and it got me thinking a lot about the universe(s)
I believe that our universe is an experiment, some people believe it is a hologram but I don't think that's possible..then again anything is possible.

The Earth will come to an end because we are only an experiment! It recreates to keep trying to improve. The universe was created by a much stronger universe (other creatures)

what do you think? please include different theories if possible!
 
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Sorry, but idle speculation isn't allowed here.
 

Thread 'Matter density right after the decoupling'

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##.
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Thread 'Rutgers finds a transparent Einstein Cross - apparently a dark matter "halo".'

The formal paper is here. The Rutgers University news has published a story about an image being closely examined at their New Brunswick campus. Here is an excerpt: Computer modeling of the gravitational lens by Keeton and Eid showed that the four visible foreground galaxies causing the gravitational bending couldn’t explain the details of the five-image pattern. Only with the addition of a large, invisible mass, in this case, a dark matter halo, could the model match the observations...
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Thread 'Big Bang and Infinite Universe'

Hi, I’m pretty new to cosmology and I’m trying to get my head around the Big Bang and the potential infinite extent of the universe as a whole. There’s lots of misleading info out there but this forum and a few others have helped me and I just wanted to check I have the right idea. The Big Bang was the creation of space and time. At this instant t=0 space was infinite in size but the scale factor was zero. I’m picturing it (hopefully correctly) like an excel spreadsheet with infinite...
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