Scientists are one step closer to understanding how the universe began – after pinning down a “ghost particle” formed during the Big Bang. The make-up of a neutrino has baffled boffins for years, and requires the most sophisticated detectors to even observe. The vital particles formed 13.8 billion years ago and helped provide a structure for the early universe. They come for neutron stars, which are created by massive gravitational collapses in space, and race through the universe at light speed. Neutrinos, according to the German-based Karlsruhe Tritium Neutrino experiment (KATRIN), have no more than 0.0002% the mass of an electron. MIT physicist Joseph Formaggio explained: "Each virus is made up of roughly 10 million protons. "Each proton weighs about 2,000 times more than each electron inside that virus. “And what our results showed is that the neutrino has a mass less than 1/500,000 of a single electron." Scientists previously assumed that neutrinos had no mass at all when they were brought into the Standard Model of physics. However, this was challenged in the 1990s when researchers found they changed form when travelling from the sun. Hamish Robertson, a KATRIN scientist and professor emeritus of physics at the University of Washington, believes the experiment will be fundamental in cracking the greatest scientific mysteries. He told Futurity: “Knowing the mass of the neutrino will allow scientists to answer fundamental questions in cosmology, astrophysics, and particle physics, such as how the universe evolved or what physics exists beyond the Standard Model. “These findings by the KATRIN collaboration reduce the previous mass range for the neutrino by a factor of two, place more stringent criteria on what the neutrino’s mass actually is, and provide a path forward to measure its value definitively.” The study could also shine a light on dark matter, which accounts for about 85% of the universe's total mass density. However, scientists have not been able detect it anywhere in the visible universe. So-called “sterile neutrinos” may account for the mystery substance. The KATRIN experiment was carried out at the Karlsruhe Institute of Technology in Germany and involved top researchers from around the world. The findings were then revealed at the 2019 Topics in Astroparticle and Underground Physics conference in Toyama, Japan.
camera iphone 8 plus apk ‘Ghost particle’ from Big Bang tracked down that could crack mystery of universe |
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