The Hubble Tension: Systematic Error or Model Failure?
CosmologyComments
Which specific TRGB datasets are being used to cross-verify the Cepheid results? I want to know if the tension holds across both distance indicators.
You say we spent years blaming the tools and the dust, but those are the actual variables we can measure. It seems a bit fast to jump to a total rewrite of physics when we are still arguing over how to account for interstellar extinction.
The JWST data is specifically reducing the uncertainty in the Cepheid distance ladder by resolving the crowding issues that plagued Hubble. The error bars are actually shrinking while the gap persists.
This reminds me of how the discovery of Neptune happened because Uranus was not orbiting the way it should. A stubborn discrepancy usually means there is something fascinating waiting to be found.
aligns perfectly with the massive early galaxies jwst just found.
We had a similar crisis with the age of the universe in the 90s before we accepted the cosmological constant. History suggests the model usually survives by adding one weird parameter.