International Olympiad on Astronomy and Astrophysics (IOAA)

Name: International Olympiad on Astronomy and Astrophysics (IOAA)
Start: 2026-09-25
End: 2026-10-05

STEM

IOAA 2026 (Hanoi, Vietnam)

September 25, 2026 (UTC+7)

An annual astronomy and astrophysics competition for high school students, with theoretical, data analysis and observational rounds. National teams are selected through each country's own astronomy olympiad.

Registration

Format: In person
Age: 14-19
Participation: Team
Location: International
Entry fee: Free
Prize: Gold, silver and bronze medals plus honourable mentions.

Timeline

IOAA 2026 (Hanoi, Vietnam)September 25, 2026 (UTC+7) source
Results announcedOctober 5, 2026 (UTC+7) source

Country pathways

Real national qualifier pathways into this competition, where one exists.

India official site

Indian National Astronomy Olympiad (INAO)approximateJanuary 31, 2027 source

Visit the official site