September 27, 2027 - October 1, 2027 — International Astronautical Federation (IAF), Poznań, Poland 78th International Astronautical Congress (IAC 2027) Expects ~10,000 participants for event themed One Space. Shared Future. Co-events include Space Generation Congress, September 23-25; UN / IAF Workshop, September 24-26; IAA Academy Day and...