Researchers have made the most accurate measurements to date of both matter and antimatter, a discovery they say will help them better understand how the universe was formed. The research team used an electromagnetic trap to slow down individual protons and antiprotons before they could collide, according to the study published in the journal Physical Review Letters. Measurements confirm that a single particle of matter and antimatter are similar in size, but scientists hope the more precise measurements will help them understand why matter came to dominate its polar opposite to form the world as we know it.

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