https://www.sciencealert.com/jwst-and-hubble-agree-on-the-universes-expansion-and-its-a-major-problem

“A new, precise measurement of the expansion rate of the Universe is in, and it’s serving up a huge cosmic pickle.

Using Hubble data and new observations from the James Webb Space Telescope (JWST), a team led by physicist Adam Riess of Johns Hopkins University has confirmed that previous measurements are correct after all, despite years of debate…..

The problem is that other methods of measuring the Hubble constant return different measurements. Scientists thought that this Hubble ‘tension’, as it is known, might be a human error. A new measurement with a very high confidence level – 8 sigma – means that something else is the issue.

“With measurement errors negated, what remains is the real and exciting possibility that we have misunderstood the Universe,” Riess says.”

P.S. – “Standard rulers are based on signals from the early Universe. These include the cosmic microwave background – the light that first streamed through the Universe about 380,000 years after the Big Bang – and baryon acoustic oscillations, both of which give us a Hubble constant of around 67 km/s/megaparsec.”- From article.

Concerning the CMB (cosmic microwave background) check out:

Student discovers another mega structure dubbed the BIG RING near the handle of the Big Dipper which should not exist according to the Cosmological Principle and what about this AXIS OF EVIL!