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Posts tagged as “estimate”

Mysterious neutrinos get new mass estimate

Mysterious neutrinos get new mass estimate Neutrinos, some of nature’s weirdest fundamental particles, are nearly massless — emphasis on nearly. They were predicted to be completely massless, but experiments roughly 20 years ago found they surprisingly do have some mass. Just how much has remained a mystery. Now a new calculation based on cosmological observations places an upper limit on how heavy the lightest kind of neutrino can be. There are many strange things about neutrinos: their unexpected heft, for…

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