About IAC 2025
The 76th International Astronautical Congress (IAC) will be held in Sydney from 29 September to 3 October 2025 with thousands of delegates from around 100 nations expected.
This prestigious event brings together the world's space community to access the latest advancements and trends, academic works, industry connections and partnership opportunities.
IAC 2025 will be hosted by the Space Industry Association of Australia and co-hosted by the Australian Space Agency and New South Wales Government.
The theme is ‘Sustainable Space: Resilient Earth’. The Congress will also highlight Australia’s commitment to learning from indigenous knowledge and collaborating with First Nations communities on the deployment and use of space technologies.
"IAC 2025 is an opportunity to showcase Australia’s space ecosystem, as well as more deeply connect the global space community with the Indo-Pacific region.
Our region is filled with a dynamic mix of established and emerging space players, with much to offer the world."
~ Enrico Palermo, Head of the Australian Space Agency
Secure your spot
IAC 2025 will delve into why space is critical for both businesses and our everyday lives.
Theme
Putting space sustainability front and centre
IAC 2025 will present a generational opportunity to showcase the rapid progress of Australia’s space industry and the importance of space-enabled services to the Australian way of life.
The event's theme ‘Sustainable Space: Resilient Earth’, will explore the essential connection between space innovation and sustainability, focusing on three central areas:
- Space-based applications for Earth
- Sustainable space activities
- Sustaining life beyond Earth
Sustainable Space: Resilient Earth
Learn more about the theme of IAC 2025 Sydney that highlights the essential connection between space innovation and sustainability.
Industry opportunities
IAC 2025 is the one place and time of the year where all global space actors come together.
The event will cover all elements of space and highlight the latest developments in academia and industry, as well as networking opportunities and potential partnerships.
IAC 2025 will also unite the sector with the end-users of space across a range of other industries — from agriculture to resources.
"Australia has many industries rich with transferable knowledge and innovative technologies that the space sector can draw from, as well as end users ready to benefit from space systems."
~ Enrico Palermo, Head of the Australian Space Agency
Building stronger partnerships
Building stronger partnerships
Grow your network across all areas of the space economy like manufacturing, communications, and other services.
Australia – a place for space
Australia – a place for space
Experience exciting new technical visits and associated tourism opportunities across Australia.
Extend your regional connections
Extend your regional connections
Australia provides a pivotal location to showcase the dynamic Indo-Pacific space community and its growing potential.
Registrations and program details
Covering all space sectors and topics, IAC 2025 offers everyone the latest space information and developments in academia and industry, networking opportunities, meaningful connections, and potential partnerships.
Learn more about the numerous opportunities to showcase your organisation to thousands within the global space community and key decision makers spanning around 100 countries.
Frequently Asked Questions
The International Astronautical Federation is the organiser of IAC 2025.
This year will mark the 76th edition of the event, which began in 1950.
Space Industry Association of Australia is the host of IAC 2025.
The Australian Space Agency and New South Wales Government will co-host the event.
IAC 2025 will be held in Sydney from 29 September to 3 October this year.
Thousands of delegates from around 100 nations are expected to attend IAC 2025 in Sydney.
This prestigious event brings together the world's space community to access the latest advancements and trends, academic works, industry connections and partnership opportunities.
Yes, twice before. IAC 1998 was held in Melbourne and IAC 2017 was held in Adelaide.
The establishment of the Australian Space Agency was announced at the 68th edition in Adelaide.
The Agency commenced its operations on 1 July 2018.
Yes, IAC 2025 welcomes space enthusiasts of all ages, interests, and backgrounds.
The Congress will hold a free Public Day for visitors on Friday 3 October 2025.
Visit IAC 2025.org for more details.
The theme of IAC 2025 is ‘Sustainable Space: Resilient Earth’.
This covers space-based application for earth; sustainable space activities; and sustaining life off earth.
Visit IAC2025.org for more details.
The venue for the Congress is the International Convention Centre Sydney, on the beautiful Darling Harbour.
Yes, visitors can get up close with real astronauts, hear their stories, and take home a memory of the stars.
The Congress will hold a free Public Day for visitors on Friday 3 October 2025.
Visit IAC2025.org for more details.
IAC 2025 will be held across five days.
Visit IAC2025.org to learn more about how the Congress’ program will cover all space sectors and topics.
Attendees can register themselves as individuals or groups.
Visit IAC2025.org to register online.
Visit IAC 2025 Sydney Prospectus to learn more about the Congress’ sponsorship and exhibition related information.
