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Conclusions Discrepancy is 5 sigma, ~10 years, No precise Late < Early, very robust * Exhaustive study of systematics, variations, we see no internal Inconsistencies, excess noise, etc *Tests inconsistent with dust, metallicity, crowding as explanations. Graph showing the measured expansion rate of the universe over time, with shaded areas marking error bars. Plank CMB is green. SN Ia-Cepheids distance ladder is grey. The error bars go down over time. and the points diverge, showing the continuing Hubble tension. Insert graph shows Hubble constant measurements in the Early Universe and Direct measurements. The averages are different.

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Conclusions Discrepancy is 5 sigma, ~10 years, No precise Late < Early, very robust * Exhaustive study of systematics, variations, we see no internal Inconsistencies, excess noise, etc *Tests inconsistent with dust, metallicity, crowding as explanations. Graph showing the measured expansion rate of the universe over time, with shaded areas marking error bars. Plank CMB is green. SN Ia-Cepheids distance ladder is grey. The error bars go down over time. and the points diverge, showing the continuing Hubble tension. Insert graph shows Hubble constant measurements in the Early Universe and Direct measurements. The averages are different.
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Kelly Lepo (kellylepo@astrodon.social)'s status on Friday, 15-Sep-2023 02:19:21 JST Kelly Lepo
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Results out from Adam Riess, the Hubble Tension remains after observations of cepheid variable stars with JWST's clearer near-infrared view.
Measurements of the local value of the expansion rate of the universe (from the cosmic distance ladder) disagree with the rate you predict from measurements made in the early universe (CMB).
Blog post:
https://webbtelescope.org/contents/early-highlights/webb-confirms-accuracy-of-universes-expansion-rate-measured-by-hubble
#JWSTYearOne

In conversation about a year ago from astrodon.social permalink