IOAAInternationalAstronomy
International Olympiad on Astronomy and Astrophysics (IOAA)
Organised by IOAA / HBCSE India teamOfficial Website ↗
World championship in Astronomy and Astrophysics. Theoretical data analysis and observational components. Pathway: NSEA → INAO → OCSC → PDC → IOAA.
Eligibility
Top 4 from OCSC Astronomy — represent India
Fee
Nil
Reg. Opens
N/A–N/A
Exam Date
Aug 2026
Level
International
Pathway Stage
National Entry
About this olympiad
World championship in Astronomy and Astrophysics. Theoretical data analysis and observational components. Pathway: NSEA → INAO → OCSC → PDC → IOAA.
The pathway
Stage 5 of 5
How registration works
1
National selection through NSEA → INAO → OCSC
2
No direct registration.
How to prepare
Understand the syllabus
Focus on the core concepts of the Astronomy curriculum with a higher weightage on analytical problems.
Solve past papers
Practice with previous years' question papers to understand the exam pattern and marking scheme.
Notify Me
Get notified when IOAA 2026 registration opens.
Quick Facts
TypeAstronomy Olympiad
International?Yes
Govt Recognized?Yes
Online Exam?No
Related olympiads
NSEANational
National Standard Examination in Astronomy (NSEA)
IAPT / HBCSE TIFR
Class 10–12 (DOB Jul 1 2006 – Jun 30 2011)
Reg: Aug–Sep
₹200
INAONational
Indian National Astronomy Olympiad (INAO)
HBCSE TIFR
NSEA qualifiers only
Reg: Auto–Auto
Free