This issue I have with the so-called "Hubble Tension" and the apparent observational discrepancies
theythe hobo elite might be approached by considering
magnetic monopoles as the source.
Doc, I know you are following this thread with great difficulty; I offer to you the following vidya:
Which for some bizarre reason seems to constantly AutoPlay for me if I have that setting enabled on YouTube. I find it incredibly infuriating, honestly. I am somewhat skeptical of the idea of "Dark Matter" as it is presented and entirely reject the idea of "Dark Energy" that the logic of "Dark Matter" dictates...
The vidya above was perhaps the ultimate source of my earlier musings on tensors, and the idea of how they might be used to examine the "mean free path of light" in the "vacuum" of deep inter-galaxial space. If one introduces these predicted magnetic monopoles into said vacuum, might this need for both Dark Matter and Dark Energy entirely disappear?
If the above link to a treatise on magnetic monopoles proves too difficult or lengthy to read (
how I wish I had a copy of my dear old father's similar one he constructed for a Master's Thesis, alas) here is a
Panhandler Broadcasting System vidya on the same subject:
You may find it a bit difficult to follow, and I apologize in advance for not "using my own words" to describe what, in fact, the actual theorized magnetic monopole might be.
You may think of them as electrons and/or protons, of a fashion; if you like. They are NOT electrons/protons
per se but do somewhat resemble them. I believe the main difference betwixt the two is the predicted mass of the monopoles, the vidya does a decent job of outlining this.
It would be curious indeed, should one ever manage to capture and/or create a magnetic monopole, to examine exactly what effect (
if any) the presence of one or more might have on the electro
magnetic light wave?
I speculate, perhaps these things might be found in greater abundance in these vast intergalactic void spaces. If they have the predicted masses AND monopolar charge they very well might be distorting the mean free path of light passing through in a significant and perhaps even unexpected manner.
Note that magnetic monopoles of opposite charge would annihilate one another, and if any were still extant in the universe they must necessarily be separated from one another (
perhaps in clouds of like charges) separated by some distance.
I further note: the first vidya linked above does not even bother to adventure into a possible magnetic monopole explanation of the Dark Matter/Dark Energy issue; I honestly expect more of the esteemable Dr. Kaku...

N'Joy!