A perfectly balanced atom just broke one of nuclear physics biggest rules

Physicists have discovered a surprising new Island of Inversion in a place no one expected: among nuclei where the number of protons equals the number of neutrons. For decades, these strange regions-where atomic nuclei abandon their usual orderly structure and become strongly deformed-were thought to exist only in highly neutron-rich isotopes far from stability. But experiments on molybdenum isotopes revealed that molybdenum-84 behaves dramatically differently from its close neighbor molybdenum-...