"James Webb telescope detects evidence of ancient ‘universe breaker’ galaxies | Astronomy | The Guardian" https://amp.theguardian.com/science/2023/feb/22/universe-breakers-james-webb-telescope-detects-six-ancient-galaxies

"First images from Nasa’s James Webb space telescope reveal ancient galaxies | James Webb space telescope | The Guardian" https://www.theguardian.com/science/2022/jul/11/nasa-james-webb-telescope-ancient-galaxy-images

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    $\begingroup$ Can you elaborate a bit on what sorts of hint you'd expect, or why you'd expect any hints in the CMB? $\endgroup$
    – pela
    Commented Apr 17, 2023 at 11:14
  • $\begingroup$ @pela Perhaps an anomalously high redshift in the cmb for this region of space where there was a higher density of matter than usual or perhaps a CMB in this region with a lower or higher standard deviation than usual. Or even with a more symmetrical statistical distribution. $\endgroup$
    – user50623
    Commented Apr 17, 2023 at 11:35
  • $\begingroup$ The CMB originates from regions that are many billions of lightyears more distant than any galaxy, so they aren't really correlated (except for the SZ/SW effects where later clusters of galaxies leave an imprint in the CMB). Although it's not impossible that the concordance model of the Universe, ΛCDM, is wrong, I can give you a long list of reasons why the JWST galaxies might not have broken ΛCDM just yet. $\endgroup$
    – pela
    Commented Apr 17, 2023 at 12:47


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