International Astronautical Congress
The International Astronautical Congress (IAC) is an annual meeting that deals with matters about space. The meeting is held by the International Astronautical Federation with the support of the International Academy of Astronautics and the International Institute of Space Law (IISL). It is hosted by one of the national society members of the IAF. The meeting is normally held in late September or early October. They consist of plenary sessions, lectures and meetings. The IAC is attended by the leaders and senior members of the world's space agencies.