The Webb telescope may have solved it.
I think it was actually more interesting when it was a clear disparity, because that might have been an opportunity to learn some new physics (and new physics will be required if we’re to venture beyond the solar system).
No, they didn’t solve anything. They only looked at ten close galaxies. Find some galaxies on the other side of the Böotes void and I predict the measured Hubble constant will be much higher than 70km/s/Mpc. Maybe four times higher.
Interesting prediction!
You have me exceedingly curious, especially regarding the Bootes Void; what mechanism do you have in mind?
Vacuum energy, perchance?
I don’t have the math yet to fully describe my idea, but we’ve been looking at time wrong. I think volume is quantized at the Planck scale, and that what we experience as time is the rate at which new quanta of volume are incorporated into the universe.
The large scale structure of the universe looks like a bubble bath: large voids dominate, and mass is accumulated where the voids meet, in long strings where three voids meet and in clusters where four voids meet. My idea means that time moves much faster far from mass, perhaps 4 times faster in the middle of a void than within a galaxy, and stopping altogether at the center of a black hole.
It means that stars in the outer rim of a galaxy are still sweeping out equal areas in equal times, and that it looks like they’re moving faster than they should because time is moving faster for them than for stars closer to the center of the galaxy. So, poof, no more dark matter needed. And time moving faster in voids means most of the expansion of the universe occurs in the voids; poof, no more dark energy.
My proof would be a measurement of the Hubble constant in one of the long strings of galaxies where three voids meet, which should be much higher than the measured Hubble constant within a galactic supercluster.
Um you are describing Gravitational Time Dilation.
As far as dark matter astronomers have found evidence of potential dark matter effects on gravitational lensing.
No, although time dilation is a consequence.
Ed, are you trying to burst my bubble?
One issue Ed if I am getting what you are getting at wouldn’t measuring the cosmic microwave background radiation Hubble Constant be the higher value then. The issue was they were getting local measurements that were higher and caused the conjecture for Dark Energy.