NATURE

First sighting of ‘neutrino fog’ sparks excitement – but is it bad news for dark matter?

An image showing the bright light of a solar flare on the left side of the sun.

Most neutrinos that stream through Earth are produced by fusion reactions in the Sun.Credit: NASA/Goddard/SDO

Physicists in Italy and China have for the first time observed glimmers of the ‘neutrino fog’, signals from neutrinos that mimic those expected to be produced by dark matter.


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