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Deep in the dense core of a black hole, protons and electrons are squeezed together to form neutrons, sending ghostly particles called neutrinos streaming out. Matter falls inward. In the textbook case, matter rebounds and erupts, leaving a neutron star. But sometimes, the supernova fails, and there’s no explosion; instead, a black hole is born. Scientists hope to use neutrino experiments to watch a black hole form.
Finding a small discrepancy in measurements of the properties of neutrinos could show us how they fit into the bigger picture. One of those properties is a parameter called theta13. Theta13 relates deeply to how neutrinos mix together, and it’s here that scientists have seen the faintest hint of disagreement from different experiments.
It survived a month-long journey over 3,200 miles, and now the delicate and complex electromagnet is well on its way to exploring the unknown. The Muon g-2 ring has successfully cooled down to operating temperature and powered up, proving that even after a decade of inactivity, it remains a vital and viable scientific instrument.