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P-ONE envisions 10 clusters of these insanely long strings, each with 20 optical features, for a total of 1,400 photodetectors gliding up and down in the Pacific, covering an area that's miles wide. The next step is to attach floats to the strands, so they can hang vertically in the water. It works like this: first, scientists find an isolated region in the Pacific, then we build unconscionably long strands of photodetectors (nearly a mile long, probably longer). Don't worry, it's not actually an ocean-spanning detector. This is why the Pacific Ocean Neutrino Experiment (P-ONE) might be necessary. For our grasp of these mysterious and theoretically abundant particles to expand, we need a bigger detector.Ī neutrino detector of unprecedented scale And the most high-energy neutrinos are so rare that existing detectors like IceCube in Antarctica have only detected a handful of them. This means even a breakthrough study that might capture one neutrino would only know a tiny sliver of the neutrino's existence, and very little of its "past lives", so to speak. While each one has its own set of associated nuclear reactions, all three kinds can swap identities while in motion. Three kinds of neutrinos are known to scientists: the muon neutrino, the tau neutrino, and the electron neutrino. But, in time, evidence hinted that neutrinos have some mass, after all. For decades, physicists thought the elusive neutrinos had no mass, moving through the cosmos at the speed of light. Despite this mind-numbing number, in one human lifespan only about one neutrino will ever directly interact with the atoms of your body. That's a lot.īut the problem is how rarely neutrinos interact with ordinary matter, even though there are trillions and trillions flowing through your body per second. Earlier studies on neutrinos have suggested that - when you hold your thumb up to the sun, roughly 60 billion neutrinos will pass through your thumbnail, every single second. The core of the sun, for example, is one unspeakably huge fusion reaction, which means neutrinos are continually firing away from it. In fact, wherever nuclear activity is going down, neutrinos aren't far, according to a report from. They are involved in the weak nuclear force, and play a crucial role in nuclear decay and fusion.
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The universe generates neutrinos at a significant quantity.