Do Neutrinos Explain Matter-Antimatter Asymmetry?

[Aelinsaar]

Someone mentioned in one of the comments here, that the articles with the titles, "Some kind of question?" almost invariably could be summarized by the single word, "No."

...And this one is no exception to that rule, is the end of that sentence.

[andrewflnr]

Someone correct me if I'm misunderstanding, but it looks like the actual answer to the headline is "95% chance of yes". I actually thought it was remarkable for being a counterexample to Betteridge's law.

[scotty79]

Neutrinos pass through Earth and our experimental equipment. I was always wondering if asymmetry between matter and antimatter couldn't be explained with unaccounted for interactions with ambient neutrinos. And those are asymmetric because all of nearby neutrino sources are built of matter not antimatter.

Intergalactic void is so empty that next galaxy could be made of anti-matter (it probably isn't) and we couldn't tell.

[InclinedPlane]

> "Intergalactic void is so empty that next galaxy could be made of anti-matter (it probably isn't) and we couldn't tell."

This isn't actually true, there's enough matter in intergalactic space that if there were galaxies made of anti-matter anywhere in the visible universe the interface between regular and anti-matter would shine more powerfully than the galaxy, and have a very characteristic spectrum as well. Nothing of the sort has been observed.

[outworlder]

> Intergalactic void is so empty that next galaxy could be made of anti-matter (it probably isn't) and we couldn't tell.

But not completely empty and we should be able to detect matter-antimatter annihilations.

[spedru]

Betteridge's law is realized.