By 2050, cities around the world will be home to six billion people, about 70% of the world’s population. This overwhelming fact forces us to investigate the way our societies inhabit cities. As a place with high concentration of services, we want our cities to be fast, effective and personalized — or in other words, smart. And we do need intelligent solutions and innovations to solve our societies’ critical challenges, to give answers to climate change, food waste or transportation. Or shall we turn to space to find the solution for a sustainable future?