This theory is already known from many fictional movies, but it's true! In 1928, British physicist Paul Dirac decided to review the famous equation E=mc2 and concluded that Einstein had “forgotten” a detail. According to Dirac, Einstein thought that mass, the “m” in the equation, was always positive. For the British physicist, however, the “m” could also have negative properties. In rewriting the equation, Dirac defined it as: E = + or - mc2. His conclusion was that we should consider the existence of antiparticles in our universe.

And what would these antiparticles be? Nothing more than the mirror image of normal matter. Each antiparticle has the same mass as the original but the opposite electric charge. Since then, various experiments have proved the existence of this antimatter, with the discovery of positrons, positively charged electrons, and antiprotons, negatively charged protons. The contact of antimatter with matter results in an explosion that emits pure radiation.