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The Olympiad was founded from a dissidence inside the International Astronomy Olympiad, in order to increase the scope of the organization.
The first IOAA was held in Chiang Mai, Thailand, in November/December 2007.
The first Olympiad was held in the city of Chiang Mai (Thailand) from November 30 to December 9, 2007. The International Council, consisting of team leaders, elected a president (Dr. Boonrucksar Soonthornthum, Thailand) and a secretary general (Dr. Chatief Kunjaya, Indonesia) for a five-year term.
The second Olympiad was held in 2008, from August 19 to 28, in the city of Bandung (Indonesia). It was attended by representatives of 22 countries.
The third Olympiad was held in 2009, from October 17 to 27, in Tehran. An observation tour was conducted in the desert. Representatives of 20 countries took part in the Olympiad.
The fourth Olympiad was held in 2010, from September 12 to September 21, in Beijing. 114 participants of the Olympiad came from 23 countries.
The fifth Olympiad was held in 2011, from August 25 to September 4, in the Polish cities of Katowice, Chorzow and Krakow. For the first time the Olympiad was held in Europe. Representatives of 26 countries took part in the Olympiad. In Poland, the International Council elected a new president (Dr. Chatief Kunjaya, Indonesia) and a secretary general (Dr. Greg Stachowski, Poland). Regional coordinators were also elected (Dr. Thaís Mothé Diniz, Brazil, for America and Dr. Aniket Sule, India, for Asia).
The sixth Olympiad was held in 2012, from August 4 to 13. For the first time the Olympiad was held in America in the Brazilian cities of Rio de Janeiro and Vasoras. Representatives of 28 countries took part in the Olympiad.
The seventh Olympiad was held in 2013, from July 27 to August 4 in the Greek city of Volos. The competition was attended by 39 teams from 35 countries, including for the first time teams from the USA, New Zealand, Canada, Malaysia, Armenia, the Republic of Macedonia and Cyprus.
The fourteenth Olympiad was supposed to be held in Bogota, Colombia. However, due to the COVID-19 pandemic, the competition was moved to an online format and Colombia was moved to 2021. This competition was not named IOAA, but GeCAA (meaning Global e-Competition on Astronomy and Astrophysics) and did not count as the 14th IOAA. It was held 23rd September 2020 to 23rd October 2020. Estonia was the host country.
|Number||Year||Host country||Host city||Absolute winner||Countries Represented||Website|
|1||2007||Thailand||Chiang Mai||THA Suwun Suwunnarat||21|
|2||2008||Indonesia||Bandung||IND Nitin Jain||22|
|3||2009||Iran||Tehran||IND Nitin Jain||20|
|4||2010||China||Beijing||POL Przemysław Mróz||23|
|5||2011||Poland||Chorzów / Katowice / Krakow||CZE Stanislav Fort||26||IOAA 2011|
|6||2012||Brazil||Rio de Janeiro / Vassouras||LTU Motiejus Valiūnas||28||IOAA 2012|
|7||2013||Greece||Volos||ROM Denis Turcu||35|
|8||2014||Romania||Suceava / Gura Humorului||ROM Denis Turcu||42|
|9||2015||Indonesia||Magelang / Semarang||INA Joandy Leonata Pratama||41|
|10||2016||India||Bhubaneswar||IND Ameya Patwardhan||42||IOAA 2016|
|11||2017||Thailand||Phuket||SLO Aleksej Jurca||44||IOAA 2017|
|12||2018||China||Beijing||RUS Stanislav Tsapaev||39||IOAA 2018|
|13||2019||Hungary||Keszthely & Heviz||VIE Nguyễn Mạnh Quân||46||IOAA 2019|
|N/A[a]||2020||Estonia[b]||N/A||CAN Zhening Li||40||GeCAA|
|14||2021||Colombia||Bogotá (online)||RUS Maksim Permiakov||48||IOAA 2021|
|18||2025||United States||Flagstaff, Arizona||TBD|
- Due to the COVID-19 pandemic, IOAA 2020 was replaced by an online competition: the Global e-Competition on Astronomy and Astrophysics (GeCAA).
- The GeCAA was organized by the IOAA International Board with extensive support from the Estonian Astronomy Olympiad Committee.
The following table lists multiple (triple and more) gold medal winners of IOAA with their ranks and corresponding years.
|Denis Turcu||Romania||2013 (1st)||2014 (1st)|
|Stanislav Fort||Czech Republic||2010 (8th)||2011 (1st)||2012 (2nd)|
|Peter Kosec||Slovakia||2010 (5th)||2011 (4th)||2012 (5th)|
|Daniil Dolgov||Russia||2016 (8th)||2017 (3rd)||2018 (11th)|
|Jindřich Jelínek||Czech Republic||2016 (9th)||2018 (5th)||2019 (7th)|
Note: Several countries (e.g. India, Indonesia, Iran, Thailand) do not allow their students to contest in IOAA more than two times, even if they are eligible. Thus, statistics from those countries is not included in the table above.
- "About IOAA". www.ioaastrophysics.org.
- "IOAA History | Bangladesh Olympiad on Astronomy and Astrophysics (BDOAA)". 2019-01-23. Retrieved 2021-09-28.