Hi ELI5. So I have been reading a diverse set of books on astrophysics and the universe, and how most physicists believe the Universe came into existence (and how it spread out to the state that it is currently in). I came across the ‘cosmological principle’ which I found very interesting.
Now I can understand why one would believe that the universe is, atleast when viewed from a large enough scale, isotropic and homogenous. I also get that this isotropy implies that on a large scale the universe looks the same in any direction and, thus, there are no special directions to our universe (I.e. to state that to the observer every point may look like the center). I also get that the homogeneity implies that on a large scale, the distribution of matter (that is to say, the average density of matter) is approximately the same in any region of the universe and, hence, there are no special locations in the universe.
**I want to stretch my understanding and gather what it would be that negates such a cosmological principle. Is there any theory or a principle, perhaps existing on the fringes of science, that once proved would absolutely make the acceptance of the cosmological principle untrue?**
**Alternatively, is there any potential discovery that might make the cosmological principle incorrect?**
In case there are gaps in my understanding, please feel free to correct me and help me understand better. Thank you so much you wonderful people!
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Also please feel free to suggest any readings I can pick up to refine my understanding of this or to build up alternate/competing theories wrt this. Thank you!
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