https://phys.org/news/2019-01-space-subjects-world-attention.html > The 2018 congress was held in Bremen, Germany, and attended by the world's space agencies, private space companies, engineers, and spaceflight fans. In the past decade, a number of interesting trends have emerged at this congress. > These include which countries are emerging as space powers; what topics get people talking; and what concerns experts have about humanity's ongoing attempts to become a "multi-planet species" that can live on other planets.