Theoretical calculations have predicted the now confirmed tetraneutron, a strange state of matter
Andrey Shirokov, left, of Moscow State University in Russia, who was a visiting scientist in Iowa, and James Fary of Iowa, part of an international team of nuclear physicists who theorized, predicted and announced the tetraneutron structure in 2014 and 2016 .Credit: Christopher Gannon / Iowa State University College of Liberal Arts and Sciences James …