Antalya opens the 77th International Astronautical Congress with 35,000 delegates expected

The 77th International Astronautical Congress opened in Antalya on Monday, the first time the meeting has been held in Turkey. It runs from 5 to 9 October at the Nest Congress and Exhibition Centre in Belek, under the banner "The World Needs More Space." President Recep Tayyip Erdoğan gives the opening address. The International Astronautical Federation organises the congress. The Turkish Space Agency hosts it, and the SAHA Istanbul aerospace cluster is co-host.

Hurriyet Daily News, citing the organisers, put the expected attendance at about 35,000 delegates from 604 organisations across 82 countries. Antalya governor Hulusi Şahin told Anadolu Agency that social tour programmes had been arranged for astronauts and other guests. The German pavilion, organised by the Federal Ministry for Economic Affairs and Energy, has 22 companies on the floor, according to the German aerospace industry association BDLI.

What the congress is for

The IAC has met since 1950. It is the International Astronautical Federation's annual meeting of agencies, firms and researchers, not a treaty conference. Papers cover launch, satellite applications, exploration and law. The 2026 theme, as stated by the hosts, is meant to push equitable and sustainable approaches to exploration, with sessions on space security, international exploration programmes and the long-run duties attached to activity beyond Earth. Those are panel titles. The binding decisions, if any, will be in the bilateral meetings off the main hall.

Turkey's reason for hosting is industrial as much as ceremonial. The Turkish Space Agency is young by the standard of NASA, ESA or ISRO. Hosting the IAC puts buyers and partner agencies in Belek for five days, next to SAHA Istanbul firms that want launch and satellite work. Erdoğan's opening address is the political frame. The exhibition floor is the commercial one. A congress of this size also fills hotels in a city that already runs on tourism. Şahin's note on tours for visiting astronauts is the municipal side of the same booking.

Who is on the floor

The 22 German exhibitors are one national pavilion among many. BDLI lists the Nest centre's address as Belek Mahallesi, Serik, Antalya, postcode 07506. The IAF has not, in the pre-opening notices, published a full national head-count. The 82-country and 604-organisation figures are the organisers' estimate going into the week, not a registration close. By Friday, when the congress ends, the useful comparison will be how many of those organisations announced a contract, a payload slot or a joint mission, against how many attended a reception.

Space meetings in 2026 sit next to a crowded defence calendar. The same week has a G7 oil-release plan still being implemented, a German chancellor in Kyiv, and US bombers withdrawn from an English base after arrests. None of that is on the Belek agenda. It does shape which agencies send their political tier and which send engineers. The Turkish hosts have sold the week as a first. The test, by 9 October, is whether a Turkish firm or the Turkish Space Agency leaves with a signed cooperation that was not available before the delegates landed.

The congress closes on Friday. Erdoğan's text on Monday morning is the sentence the hosts will quote. The exhibition list, and any contract read out before the delegates fly out, is the sentence that will show whether the first Turkish IAC was a venue or a market.