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  1. Antimatter - Wikipedia

    Antimatter occurs in natural processes like cosmic ray collisions and some types of radioactive decay, but only a tiny fraction of these have successfully been bound together in experiments to form …

  2. DOE Explains...Antimatter - Department of Energy

    Scientists haven’t seen anti-matter regions in our universe, but they have created copious amounts of antiparticles in particle accelerators and even created anti-elements and anti-atoms.

  3. The Mystery of Antimatter: Where Did It All Go?

    May 23, 2025 · Antimatter, the elusive twin of matter with opposite charge and quantum properties, is almost nowhere to be found. So where did it all go? This cosmic imbalance is not just a quirky …

  4. Antimatter | Definition & Facts | Britannica

    Dec 3, 2025 · Antimatter is a substance composed of subatomic particles that have the mass, electric charge, and magnetic moment of the electrons, protons, and neutrons of ordinary matter but for …

  5. Universe’s missing half: What is antimatter and why it matters

    Aug 1, 2025 · But antimatter is very real, though vanishingly rare in our universe. Whenever a particle meets its antiparticle, they annihilate in a flash of energy — converting all their mass, as per …

  6. What Is Antimatter? Definition and Examples

    Aug 30, 2020 · Antimatter is a real substance and not just a science fiction topic. Antimatter is matter composed of antiparticles with the opposite electrical charge of ordinary particles and different …

  7. Scientists get closer to solving mystery of antimatter - BBC

    Sep 27, 2023 · Scientists have made a key discovery about antimatter - a mysterious substance which was plentiful when the Universe began. Antimatter is the opposite of matter, from which stars and …

  8. What is antimatter and where did it go? - CERN

    Dec 15, 2025 · Although antimatter doesn’t seem to be very common in the Universe today, it is frequently created at laboratories like CERN, where particle accelerators simulate the high-energy …

  9. Antimatter - CERN

    At CERN, physicists make antimatter to study in experiments. The starting point is the Antiproton Decelerator, which slows down antiprotons so that physicists can investigate their properties.

  10. What is antimatter? - Live Science

    Dec 13, 2021 · Although it may sound like something out of science fiction, antimatter is real. Antimatter was created along with matter after the Big Bang.