Let’s talk neutrinos
Two dark matter experiments have spotted signs of neutrinos knocking into atomic nuclei in their detectors. The finding portends a future obstacle for the detectors, Emily Conover reported in “ ‘Fog’ invades dark matter experiments” (SN: 8/24/24, p. 12).
These detectors scan for dark matter’s interactions with the nucleus of a xenon atom. Reader Robert Walty wondered how that could work. Doesn’t dark matter interact with normal matter only through gravity?
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