IAO


Here you find the problems and solutions of the International Astronomy Olympiad. The official olympiads' websites will be linked (if possible).



Useful resource: IAO for people in a hurry

Special thanks to Je Qin Chooi, the current IAO trainer of Malaysia, for his contribution to the Astroarena database.



2021 - Online


1st IRAO:


Observation Round Problem sheet



2019 - Romania


24th IAO:


Observation Round Problem sheet



2018 - Sri Lanka


23rd IAO:


Observation Round Problem sheet



2017 - China


22nd IAO:





2016 - Bulgaria


21st IAO:





2015 - Russia


20th IAO:


Observation Round Problem sheet



2014 - Kyrgystan


19th IAO:


Observation Round Problem sheet



2013 - Lithuania


18th IAO:





2012 - Korea


17th IAO:





2011 - Kazakhstan


16th IAO:


Observation Round Problem sheet



2010 - Crimea


15th IAO:


Observation Round Problem sheet



2009 - China


14th IAO:





2008 - Italia


13th IAO:


Translation in progress...




2007 - Crimea


12th IAO:


Observation Round Problem sheet



2006 - India


11th IAO:


Theory Problem sheet
Data Analysis Problem sheet



2005 - China


10th IAO:


Theory Problem sheet



2004 - Crimea


9th IAO:


Translation in progress...

Theory Problem sheet



2003 - Sweden


8th IAO:





2000 - Russia


5th IAO:


Theory Problem sheet
Data Analysis Problem sheet
Observational Round Problem sheet



1999 - Crimea


4th IAO:


Theory Problem sheet
Data Analysis Problem sheet
Observation Round Problem sheet



1998 - Russia


3rd IAO:


Theory Problem sheet
Data Analysis Problem sheet
Observation Round Problem sheet



1997 - Russia


2nd IAO:


Subjects Problem sheet



1996 - Russia


1st IAO:


Subjects Problem sheet