As close to nothing as something can be and still exist… as far as we know.
That mass is so small, and behaves so strangely (it fluctuates), that the theories say the neutrino does NOT get its’ tiny fluctuating mass from the Higgs Field.
And if that ain’t a mind-blower of what is at the very edge of human knowledge and understanding of reality, I don’t know what is.
As close to nothing as something can be and still exist… as far as we know.
That mass is so small, and behaves so strangely (it fluctuates), that the theories say the neutrino does NOT get its’ tiny fluctuating mass from the Higgs Field.
And if that ain’t a mind-blower of what is at the very edge of human knowledge and understanding of reality, I don’t know what is.