The antimatter costs 62.5 trillion per gram. In the future it is theoretically possible to use antimatter as fuel for spaceships to other planets. The problem is that its production requires extremely expensive technology, and to create just 1 gram, the world would have to work a whole year (global GDP is 65 trillion dollars). In physics the ' anti-matter is a conglomeration of antiparticles corresponding to the particles that constitute the ordinary matter. For example, an atom of anti hydrogen is composed of an antiproton negatively charged, around which orbits a positron ( anti electron ) positively charged. If the particle and the antiparticle come into contact with each other, they annihilate by emitting photons at high energy ( gamma rays ) or other particle-antiparticle pairs such that the sum of total energy (before and after the impact) remains constant. The term antimatter was used for the first time in 1898 by Arthur Schuster in two letters sent to the journal Nature speculating on the possible existence of a solar system consisting of antimatter in which even the gravity was in the opposite direction, that is repulsive. The first hypothesis of the existence of antimatter was serious by the physicist Paul Dirac in 1928 that he deduced the existence of antiparticle ' electron , with positive charge, as the solution of the relativistic version of ' Schrodinger equation . In 1932 Carl David Anderson gave the experimental confirmation of the existence of the anti electron and called it the positron , a contraction of "positive electron". Charles Janet in 1929 imagined even a periodic of table of elements composed of antimatter. In 1959 physicists Emilio Segre and Owen Chamberlain, discovered the ' antiproton and thanks to this discovery received the Nobel Prize . In 1965 at CERN in Geneva with the particle accelerator PS ( Proton Synchrotron ) the research team led by Antonino Zichichi discovered the nucleus of the antimatter. In 1978 researchers led by French and the Italian Giorgio Giacomelli discovered anti three nuclei (one antiproton and two antineutrons ) and anti helium three (two antiprotons and antineutron ). With the accelerator in Serpukhov the Russian scientists got similar results.