> what are neutrinos for? I'm not sure I understand your question, sorry! > Are they "just" a side effect of radioactive decay They are (as fas as we know) e

> what are neutrinos for? I'm not sure I understand your question, sorry! > Are they "just" a side effect of radioactive decay They are (as fas as we know) elementary particles as several other elementary particles. > do they facilitate some other reaction? Again, I'm not sure I get the sense of your question, but I'd say no, as they are the most elusive particles we know.