The de-growth is an ominous prospect for humanity. The expansion into space is inevitable and urgent. Space tourism: the first mature sector toward civilian astronautics. The multi-culturalism as an essential tool to reach the conscience and to let people understand that space is not that far as it is perceived. These are some of the conclusions of the Space Renaissance Italia’ national congress, held on May 8th and 9th this year at the Politecnico University of Milano, entitled “Space without frontiers: a greater world is possible!”