these are little fellars,, tough to catch,, like illegals.
ya need really sensitive detectors and then what do ya do when ya do catch ‘em. ;-)
they got all kinds of experiments trying to figure out what the heck is happening subatomically.. is the universe and beyond a stringy thing or what?
I recall first time I read of such a setup, the scientists started getting alarms of hundreds of these little critters detected all at once. Naturally they began pouring thru the logs and systems to find out what broke, when they got a call about a star that had gone SuperNova. That was the first I’d ever heard of Neutrinos.