Isaac Asimov wrote a entertaining, easy-to-read book on the neutrino. That’s as far as I got, before tuning out on particle physics.
As a general matter, I think each of us should try to distinguish between science, science speculation, and science fiction. I saw a celebrity physicist on TV talk of an infinite number of universes as though that was a fact. I would put that more in the category of science fiction or science speculation.
Too much comic book reading
https://en.wikipedia.org/wiki/List_of_DC_Multiverse_worlds
https://en.wikipedia.org/wiki/Multiverse_(Marvel_Comics)
1. It probably was a fact he talked about it on tv.
2. There is evidence of multiverses and especially the block universe. Multiverses helps with the understand of time.