What If the Universe Isn't Uniform?

According to the cosmological principle, the universe is more or less the same in all directions. But what happens when we put this to the test?

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Sources:

http://www.as.utexas.edu/astronomy/education/spring06/komatsu/secure/lecture07.pdf
https://universeadventure.org/fundamentals/model-cosmological.htm
https://phys.org/news/2011-09-evidence-spacetime-cosmological-principle.html
http://cosmology.berkeley.edu/Education/CosmologyEssays/The_Cosmic_Microwave_Background.html
https://wmap.gsfc.nasa.gov/universe/bb_tests_cmb.html
https://www.sdss.org/science/
https://arxiv.org/pdf/1109.0941.pdf
https://phys.org/news/2011-09-evidence-spacetime-cosmological-principle.html
https://www.eso.org/public/news/eso1438/
https://arxiv.org/pdf/1604.05484.pdf
https://arxiv.org/pdf/1605.07178.pdf
https://www.sciencemag.org/news/2016/09/it-s-official-you-re-lost-directionless-universe
https://arxiv.org/pdf/1604.05484.pdf
https://arxiv.org/pdf/1711.02539.pdf
https://www.space.com/24073-how-big-is-the-universe.html
http://background.uchicago.edu/~whu/beginners/introduction.html
https://www.sdss.org/science/
https://ui.adsabs.harvard.edu/abs/2007PhRvD..75b3506A/abstract
https://ui.adsabs.harvard.edu/abs/2005ApJ...624..463G/abstract
https://ui.adsabs.harvard.edu/abs/2007A%26A...474..717S/abstract
https://ui.adsabs.harvard.edu/abs/2018A%26A...611A..50M/abstract

Видео What If the Universe Isn't Uniform? канала SciShow Space