National Space Society | 10,469 followers on LinkedIn. Creating a spacefaring civilization | The National Space Society (NSS) is an independent, educational, grassroots, non-profit organization dedicated to the creation of a spacefaring civilization. Founded as the National Space Institute (1974) and L5 Society (1975), which merged to form NSS in 1987, NSS is widely acknowledged as the preeminent citizen's voice on space. NSS has thousands of members and over 50 chapters in the United States and around the world.