For the first time, physicists have watched a beam of positronium, a short‑lived atom made of an electron and its antimatter ...

One of the discoveries that fundamentally distinguished the emerging field of quantum physics from classical physics was the ...

“Positronium is the simplest atom composed of equal-mass constituents, and until it self-annihilates, it behaves as a neutral ...

Scientists recreated one of the most important experiments in the history of physics—but this time, they used antimatter instead of regular matter. All matter particles have a corresponding antimatter ...

For the first time, researchers from Tokyo University of Science have observed wave-like interference patterns from ...