Matter and antimatter are like mirror opposites: they are the same in every respect except for their electric charge. Now scientists at the world’s largest particle collider have observed a new class of antimatter particles breaking down at a different rate than their matter counterparts. Previous experiments dating back to 1964 had seen CP violation in meson particles, which unlike baryons are made of a quark-antiquark pair. Magnet for the LHCb (large hadron collider beauty) particle detector at CERN (the European particle physics laboratory) near Geneva, Switzerland. This puny amount of CP violation, however, cannot account for the profound asymmetry between matter and antimatter we see throughout space.