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Cake day: June 10th, 2023

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  • In a way these observations cut more deeply into the foundations of cosmology than dark matter. Indeed, I’d argue that dark matter challenges the standard model of particle physics more than the standard model of cosmology.

    These discoveries of large scale structures challenge the assumptions that the universe is homogenous at a large enough scale. This assumption, along with isotropy, are what lead to the FLRW family of metrics describing spacetime at cosmological scales. Dark matter and dark energy only come in to the picture once you try to fit the parameters of the FLRW metrics to our observed universe.