TOPSHOTS Civilian passengers of the Airbus A330 Zero-G, who are not astronauts nor scientists, enjoy the weightlessness, on March 15, 2013, during the first zero gravity flight for paying passengers in Europe. All boarding cards, costing 6,000 euros, were sold for the years 2013 and 2014. Zero gravity flights for paying passengers have already taken place in the United States and Russia. The zero-gravity of space is simulated by flying a series of parabolic flight maneuvers that counter the forces of gravity and allow astronauts and cosmonauts to learn how to accomplish tasks with no gravity. AFP PHOTO / MEHDI FEDOUACH