Resources

International Olympiad on Astronomy and Astrophysics (IOAA)

2025 (18th)

• Data Sheet
• Theory Bundle
• Data Analysis Bundle
• Observation (Sky Map) Bundle
• Observation (Telescope) Bundle
• Observation (Planetarium) Bundle
• Group Bundle

2024 (17th)

• Theory Problems
• Data Analysis Problems
• Observation Problems
• Planetarium Problems

2023 (16th)

• Theory Problems
• Data Analysis Problems
• Observation Problems
• Planetarium Problems
• Group Problems

2022 (15th)

• Theory Problems
• Data Analysis Problem 1 with Solution
• Data Analysis Problem 2 with Solution
• Nighttime Observation Problems
• Daytime Observation Problems

Historical Materials

• IOAA Problem Book (2007-2021)

Chinese National Astronomy Olympiad (CNAO)

CNAO materials are primarily in Chinese. Please refer to the Chinese versions of this site for detailed content.

International Astronomy Olympiad (IAO)

2015 (20th)

• Theory Round for Group α
• Theory Round for Group β
• Supplementary Material 1 for Theory Round
• Supplementary Material 2 for Theory Round (Tab. of Const.)
• Supplementary Material 3 for Theory Round
• Supplementary Material 4 for Theory Round
• Supplementary Material 5 for Theory Round (HR Diag. for Group β)
• Practical Round for Group α
• Practical Round for Group β
• Supplementary Material 1 for Practical Round (Group β)
• Observational Round (Planetarium)
• Observational Round (Cloudy Sky)

Asian-Pacific Astronomy Olympiad (APAO)