DOE explains antimatter

The U.S. Department of Energy (DOE) is the government agency responsible for energy policy and nuclear weapons research in the United States, and it also funds most of the country's fundamental physics research through its Office of Science. - Antimatter is the "mirror" counterpart of ordinary matter: every particle (like an electron or proton) has an antimatter twin (a positron or antiproton) with the same mass but opposite electric charge. - When matter and antimatter meet, they annihilate — converting their entire mass into pure energy (via E=mc²), making antimatter the most energy-dense substance known. - The deep mystery: the Big Bang should have created equal amounts of matter and antimatter, yet the universe we see is made almost entirely of matter. Why the imbalance happened is one of the biggest unsolved questions in physics. - The DOE explains this topic because its research facilities (like Fermilab, Brookhaven, and CERN) are where antimatter is actually produced and studied — tiny amounts are created in particle accelerators to probe the fundamental laws of nature.