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[+] 5 points 1 week ago* (last edited 1 week ago) (2 children)
  • [–] 6 points 1 week ago* (1 child)

    Erm, actually, neutrinos aren't massless. The Super-Kamiokande experiment has observed neutrinos to oscillate between electron-muon-tau lepton family numbers (or flavors), which means that they experience time and necessarily travel slower than the speed of light, which implies that they have a nonzero rest mass. This discovery changed the Standard Model and resulted in a Nobel prize.

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