Scientists at the Large Hadron Collider (LHC) have discovered antihyperhelium-4, the antimatter version of hyperhelium-4.This discovery provides valuable insights into antimatter and the matter-antimatter imbalance in the universe.Hyperhelium-4 is a rare hypernucleus consisting of protons, neutrons, and hyperons.The study also confirms equal production rates of matter and antimatter hypernuclei, contributing to our understanding of the early universe.