Over 14,500 global participants with a passion for astronomy, physics and mathematics

Open to high school students from around the world, competing on the same stage

Inspiring Chinese students to explore the universe

Winners of the Final Round will have the opportunity to receive a scholarship

Pre-final round Date：

Release of Part A Problems: Apr. 11, 2025

Release of Part B Problems: Mid Aug. 2025

Submission Deadline: Part A: Jul. 5, 2025, 7:59 Part B: Mid Aug. 2025

Final round Date: Sep. 2025 (TBD)

International Astronomy and Astrophysics Competition (IAAC) is organised by the German Edu.Harbour committee and more than 14,500 students worldwide have taken part in this challenge. IAAC is a progressive challenge: Pre-Final Round → Final Round, where participants can receive awards, certificates, cash prizes and global recognition.
Students do not need a deep knowledge of astronomy, IAAC aims to help students develop an interest in science and encourage them to pursue future careers in scientific fields that are vital to the future of humanity!

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