Scientists working at the world’s largest atom smasher have caught a bizarre subatomic particle in the act of changing from matter to antimatter. The discovery could help us understand how the universe was saved from total annihilation soon after it exploded into existence. 

Using data from the second run of the Large Hadron Collider (LHC), researchers from Oxford University spotted the charm meson — a tiny particle that contains both a matter and an antimatter version of the quark, the fundamental building block of matter — transforming back and forth between the two states. 

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