Is there really a 'crisis' in cosmology?

[Admin]

You may have heard about the "cosmology crisis:" Different methods of measuring the age of the universe are giving different results, and cosmologists have no idea why.

Is there really a 'crisis' in cosmology? : Read more

 

[rod]

My answer is yes. Different methods for measuring H0, the Hubble constant results in different values. CMBR measurements show one result, other methods like discussed in this article like supernova, something different. The cosmology calculators show the age of universe changes, as well as other parameters. For example, a new report using planetary nebula may show another difference in H0. https://phys.org/news/2021-07-planetary-nebulae-distant-galaxies.html

Some reports attempt to smooth over, https://phys.org/news/2021-06-conflict-universe-debate.html

Some reports show dramatic differences in H0, https://ui.adsabs.harvard.edu/abs/1997ApJS..108..417Y/abstract

So using cosmology calculator 1, Cosmology Calculators (caltech.edu)

with H0 67 km/s/Mpc and defaults, the universe age could be 14.252 billion years old. Using the same calculator with H0 82 km/s/Mpc, the age is 11.647 billion years old. z=0 for both ages.

Other cosmology calculators show this too based upon the metrics for expanding space-time in use in the BB model. Cosmology calculator | kempner.net

In the early days of H0 measurements, H0 = 500 km/s/Mpc. The universe age then was about 2 billion years old. Issues like this I think should be made clear to the public, the article here is moving in that direction but still needs work in my opinion

 

[Pogo]

We had something similar some years ago where it seemed that globular clusters were older than the universe. Since everything we know about the universe comes from peering at it with our optical and other emf radiation eyes, we just don’t have enough data and knowledge about all the pieces to complete the puzzle. Model conflict is nothing new, it’s been happening since before there really was a ‘model’.