this post was submitted on 21 Jul 2025
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We have a theory for expansion of the universe. It is called "the big bang theory".
However according to the math our universe should slow down expanding, but we can observe it is speeding up. Solution? Dark Energy.
There are models that try to simulate the orbits and shit of things we can see. Now those models aren't working however... Solution? Dark matter.
This is very run down concept of what dark matter and energy is. Basically shit we need for the math to work out to the observation we make.
However I don't think we are inside a black hole. This would mean that instead of mostly nothing our universe would be cramped with matter....
If you take all the mass in our universe and run it through the Schwarzschild equation, you get a black hole with about the same radius as our observable universe.
Things don't need to be tightly packed to be a black hole, there just needs to be enough stuff in an area.
but like, the whole point of black holes is that time and space switch places, which means all the matter/energy inside them is packed in a single infinitely dense point
that's a pretty big thing to ignore
It's less than time and space switch in a singularity, and more that they are "undefined".
Like dividing by zero.