The James Webb Space Telescope seems to be finding multiple galaxies that grew too massive too soon after the Big Bang, possibly leading to changes in prevailing cosmology theories.
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Interesting Engineering: What are the implications of the possibility that the universe was expanding faster after the Big Bang than prevailing theories suggest?If the Universe expanded faster early in its history , then one implication is that the Universe would be somewhat younger than we currently believe. We now have a precise measurement of 13.8 Gyr and stellar mass density ρ⋆ of galaxies more massive than M⋆ at any epoch z.
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