Detecting neutrinos, physicists look into the heart of the Sun

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Using one of the most sensitive neutrino detectors on the planet, an international team of physicists, including Andrea Pocar, Laura Cadonati, and Keith Otis at the University of Massachusetts, Amherst, report that for the first time they have directly detected neutrinos created by the “keystone” proton-proton (pp) fusion process going on at the Sun’s core.