Scientists detected some of the tiniest particles in the universe and tracked them back to a supermassive black hole hidden out of Earth's view.
Scientists detected some of the tiniest particles in the universe and tracked them back to a supermassive black hole hidden out of Earth's view.Tiny neutrinos carry clues about some of the most energetic events in the universe — and are key to understanding the fundamental forces that govern it.
The chargeless, almost massless neutrinos aren't deflected by magnetic fields and interact weakly with matter, so if they hit Earth as they race through the universe they point back to their source. "A pattern emerged but we weren't sure whether we were seeing fluctuations in the data or if this was real," says Francis Halzen, principal investigator of IceCube and a professor at the University of Wisconsin-Madison.A combination of improvements — in calibrating the detector, improving the data analysis, gaining a better understanding of the ice and the use of machine learning — has confirmed the pattern was real, Halzen says.
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