• ameancow@lemmy.world
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    1 day ago

    Depends on the origin of the neutrino. The really old ones leftover from the beginning of the universe are so low-energy that they’re like, a millionth of an electron volt. Very not-hot.

    A supernova-originated neutrino can have over 30 mega-electron-volts. For a single particle, that’s pretty hot. You still wouldn’t feel it if it hit you though.