It could be profound': How astronomer Wendy Freedman is trying to fix the universe

[admin]

University of Chicago astronomer Wendy Freedman tells us how she's searching for an answer to the Hubble tension — a discrepancy between measurements of our universe's expansion that could threaten the dominant model of how the universe has grown since the Big Bang.

It could be profound': How astronomer Wendy Freedman is trying to fix the universe : Read more

 

[TorbjornLarsson]

I had heard that Freedman is working with JWST, This article vets my appetite for the result! (Though if she is still using Cepheids the result won't likely tell on the distance ladder problems. Based on Planck data Efstathiou show that its problems lies above the pivot scale z > 0.005, which is beyond the Cepheid scale AFAIK.)

 

[Clue-Anon]

Very good interview.

It's worth mentioning that using Cepheids in nearerby galaxies to measure the Hubble constant with HST was one of the key projects for it when it was put up 25 years ago, and Freedman headed that up. The "tension" with the CMBR fluctuations is more recent. So I too am looking forward to the JWST results of this work. Keep us informed.

 

[Debed]

Does not the hubble constant rely on the milkyway being in the middle of the universe?
Place the milkyway at one of the edges of our bubbly universe, and you will get a different speed, depending on which direction you are looking at.

 

[Debed]

Do you know what a constant is?

Yes, and here the problem is that the constant is different, depending on where you look, thus it can not be one simple constant, now, can it?