Announcements

Statement regarding participation of Israel in IOAA

Interesting new article about IA solving IOAA problems. Check it out!

The IOAA 2025 newsletter Nakshatra updated daily.
All former participants and team leaders of IOAA, join the Alumni community!

Welcome! Watch the IOAA Opening ceremony here at 10:30 Coordinated Universal Time (UTC).

The 17th IOAA, was held in Rio de Janeiro, Brazil, from 17th to 27th August 2024. More information can be found here.

The next event for junior students will be the 4th IOAA-Jr, to be hosted in Romania between the 18th-25th October, 2025.

The next event will be the 19th IOAA, hosted in Vietnam in October 2026.

The Official Circulars for The International Olympiad on Astronomy and Astrophysics (IOAA) 2025 released.

Participating? Everything you need to know is here

For Participants

Do you often find yourself staring at the stars? Are you an aspiring astronomer and astrophysicist? Enquire about national competitions in your country and learn more about celestial bodies. Find out how you can participate in the International Olympiad on Astronomy and Astrophysics.

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To the Olympiad and beyond

For Team Leaders

All information on past and future Olympiads of interest to team leaders can be found here. We share our lifelong experiences with team leaders and participants so that they may join different activities within IOAA. Join us and share your own experiences and knowledge.

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Per aspera ad astra - Welcome!

For Newcomers

Are you an aspiring astronomer? Are you a professional astronomer, professor or teacher who would like to share their astronomical knowledge with younger generations? Have you participated in or organized existing astronomical competitions and would like to join The International Olympiad on Astronomy and Astrophysics? Enter!

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Supporting the IOAA community

IOAA Foundation

The IOAA Foundation is a registered non-profit organization which supports the IOAA, manages the IOAA website and publishes new publications. The Foundation organizes international activities and cooperation between team leaders and students as well as those interested in astronomy. We offer support for team leaders, competitors and newcomers. We nurture the beautiful astronomical science and try to invite countries which have not yet joined our community.

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IOAA Junior

The aim of the IOAA-Juniors is to introduce early high school students to the marvels of the Cosmos and promote their knowledge in the area of Astronomy and Astrophysics. By participating in such international events, they have the opportunity to meet students with the same interests from all over the world.

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Don't miss 4th

IOAA JUNIOR 2025

October – November 2025. Piatra Neamt, Romania

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IOAA Achievements

17

Olympiads

3081

Participants

67

Countries

IOAA Sponsors

Become a sponsor and help young scientists achieve their dreams.

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International Olympiad on Astronomy and Astrophysics

Mission Statement

The main goal of the IOAA is to promote the growing interest in Astronomy and related STEM subjects, especially through the general education of young people, and enhancing the development of international contacts among different countries in promoting Astronomy and Astrophysics in schools. It is expected that, through events like the IOAA, more bright high-school students will be eager to study astronomy at the university level to become the next generation of astronomy and astrophysics professionals.

More about IOAA