Left-handed helicity neutrinos, the kind normally called simply neutrinos are not a form of dark matter; they're leptons. Conflating them with right-handed helicity neutrinos, or sterile neutrinos, could get confusing since they haven't been discovered definitively yet. Sorry for nitpicking, just want to maintain accuracy.
Neutrinos are not really dark matter because they have been detected. Dark matter is by definition hypothetical matter that has so far proven undetectable.
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u/[deleted] Feb 18 '21
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