[Boogieman]

This article is nonsense. They say that their evidence for another universe is detecting tau neutrinos that might be moving backwards through time. However, by definition, nothing from another universe could possibly be detected by us, or it would be part of OUR universe.

So if these neutrinos actually are moving backwards through time, then it isn’t evidence for some other universe, just evidence that some particles can move backwards through time. Still, I would highly doubt that interpretation is correct, since we don’t have evidence that time can function like a spatial dimension with bidirectionality. Seems like a more reasonable idea is that there is some unknown variable that causes the particles to move in ways that we didn’t expect, and we should look for that variable.

[who_would_fardels_bear]

For a long time they thought that neutrinos were stable, but then they learned that they could oscillate between different types.

Also, for a long time they thought neutrinos had no mass, but then they found out they did.

This may just be another fact about neutrinos that had not yet been discovered and is not yet correctly understood.

[BroJoeK]

dirtymac: "Physicists keep coming up with extremely weird theories to prove something they do not know or understand, all within the realm of ‘could’."

I like that, "realm of 'could' " -- sounds like a sort of reverse or anti-purgatory, a place for spirits of somewhat good people, who never quite made the grade, to spend some time in contemplation before being admitted to heaven.

Boogieman: "Seems like a more reasonable idea is that there is some unknown variable that causes the particles to move in ways that we didn’t expect, and we should look for that variable."

But what's the fun in that!
No, we want parallel universes, pink unicorns and pixie-dust, not just booooooooring logical science.

;-)