Physicists just made a beam of positronium—an atom made of an electron and its antimatter twin—act like a true quantum wave for the first time. Instead of behaving like a bunch of tiny balls, these atoms rippled and diffracted through a graphene sheet, proving a wild prediction from quantum theory. This is a huge deal for testing the rules of the universe and could lead to ultra-precise experiments with matter and antimatter. Science just got a little stranger! #Science #QuantumPhysics #ScienceNews