The International Olympiad on Astronomy and Astrophysics (IOAA) is an annual

astronomy Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest includ ...

and

astrophysics Astrophysics is a science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena. As one of the founders of the discipline, James Keeler, said, astrophysics "seeks to ascertain the ...

competition Competition is a rivalry where two or more parties strive for a common goal which cannot be shared: where one's gain is the other's loss (an example of which is a zero-sum game). Competition can arise between entities such as organisms, indi ...

for

high school A secondary school, high school, or senior school, is an institution that provides secondary education. Some secondary schools provide both ''lower secondary education'' (ages 11 to 14) and ''upper secondary education'' (ages 14 to 18), i.e., ...

students. It is one of the international science olympiads. The Olympiad was founded from a dissidence inside the International Astronomy Olympiad, in order to increase the scope of the organization.

History

*The first Olympiad was held in the city of

Chiang Mai Chiang Mai, sometimes written as Chiengmai or Chiangmai, is the largest city in northern Thailand, the capital of Chiang Mai province and the List of municipalities in Thailand#Largest cities by urban population, second largest city in Thailan ...

(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 Bandung is the capital city of the West Java province of Indonesia. Located on the island of Java, the city is the List of Indonesian cities by population, fourth-most populous city and fourth largest city in Indonesia after Jakarta, Surabay ...

(Indonesia). It was attended by representatives of 22 countries. *The third Olympiad was held in 2009, from October 17 to 27, in

Tehran Tehran (; , ''Tehrân'') is the capital and largest city of Iran. It is the capital of Tehran province, and the administrative center for Tehran County and its Central District (Tehran County), Central District. With a population of around 9. ...

. 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 Beijing, Chinese postal romanization, previously romanized as Peking, is the capital city of China. With more than 22 million residents, it is the world's List of national capitals by population, most populous national capital city as well as ...

. 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 Katowice (, ) is the capital city of the Silesian Voivodeship in southern Poland and the central city of the Katowice urban area. As of 2021, Katowice has an official population of 286,960, and a resident population estimate of around 315,000. K ...

Chorzów Chorzów ( ; ; ) is a city in the Silesia region of southern Poland, near Katowice. Chorzów is one of the central cities of the Metropolis GZM – a metropolis with a population of 2 million. It is located in the Silesian Highlands, on the Rawa ...

and

Kraków , officially the Royal Capital City of Kraków, is the List of cities and towns in Poland, second-largest and one of the oldest cities in Poland. Situated on the Vistula River in Lesser Poland Voivodeship, the city has a population of 804,237 ...

. 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 The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

in the Brazilian cities of

Rio de Janeiro Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the America ...

and Vassouras. 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 Volos (; ) is a coastal port city in Thessaly situated midway on the Greek mainland, about north of Athens and south of Thessaloniki. It is the capital of the Magnesia (regional unit), Magnesia regional unit of the Thessaly Region. 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 North Macedonia, officially the Republic of North Macedonia, is a landlocked country in Southeast Europe. It shares land borders with Greece to the south, Albania to the west, Bulgaria to the east, Kosovo to the northwest and Serbia to the n ...

and Cyprus. *The fourteenth Olympiad was supposed to be held in

Bogotá Bogotá (, also , , ), officially Bogotá, Distrito Capital, abbreviated Bogotá, D.C., and formerly known as Santa Fe de Bogotá (; ) during the Spanish Imperial period and between 1991 and 2000, is the capital city, capital and largest city ...

, Colombia. However, due to the

COVID-19 pandemic The COVID-19 pandemic (also known as the coronavirus pandemic and COVID pandemic), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began with an disease outbreak, outbreak of COVID-19 in Wuhan, China, in December ...

, 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 23 September 2020 to 23 October 2020.

Estonia Estonia, officially the Republic of Estonia, is a country in Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the Baltic Sea across from Sweden, to the south by Latvia, and to the east by Ru ...

was the host country.

Summary

The 1st IOAA-Jr, for the students under 16 years of age was held in Romania from 30 October to 7 November 2022. The 2nd IOAA-Jr was held in

, Greece from 24 to 30 September 2023, and its age restriction was lowered to students under 15. The 3rd IOAA-Jr was hosted by

Kathmandu Kathmandu () is the capital and largest city of Nepal, situated in the central part of the country within the Kathmandu Valley. As per the 2021 Nepal census, it has a population of 845,767 residing in 105,649 households, with approximately 4 mi ...

Nepal Nepal, officially the Federal Democratic Republic of Nepal, is a landlocked country in South Asia. It is mainly situated in the Himalayas, but also includes parts of the Indo-Gangetic Plain. It borders the Tibet Autonomous Region of China Ch ...

from 3 to 10 October 2024. The 4th IOAA-Jr will be held in Romania.

Participating Countries

Source: https://www.ioaastrophysics.org/participating-countries/

Results

Source: https://www.ioaastrophysics.org/results/

Prize winners

High-scoring participants

The following table lists multiple (triple and more) gold medal winners of IOAA with their ranks and corresponding years. 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.

References

External links

* {{International Science Olympiad Astronomy competitions International Science Olympiad