Fact: The radioactive potassium-40 emits about 15 articles of antimatter a day. So what, exactly, is antimatter? Antimatter is matter consisting of elementary particles which are the antiparticles of those making up normal matter. The person who discovered antimatter was the English Physicist Paul Dirac (1902-1984). Dirac derived an equation that explains how really small and really fast things behave, such as electrons travelling near the speed of light. Later, Dirac realised that not only did his equation & theory discover the behaviour of very tiny things, he also discovered something new to the growing world of science; anti-particles. Paul Dirac continued to assert that every particle has a mirror-image particle with nearly identical properties, except for an opposite electrical charge. Similar to the way protons, neutrons and electrons combine to form atoms and matter, antiprotons, antineutrons and anti-electrons (called positrons) combine to form anti-atoms an...