Just like people, neutrinos can be right-handed or left-handed. Southpaws will rejoice to hear that unlike in the human population, where left-handedness is not the norm, all the neutrinos that we have ever seen are in fact left-handed. Symmetrically, all of the antineutrinos that scientists have ever seen have been right-handed. It may seem odd … Continue reading Are all neutrinos left-handed?