IOAA (International Olympiad on Astronomy and Astrophysics)

The IOAA’s major purpose is to foster a rising interest in astronomy and associated STEM fields among young people, particularly through general education, and to strengthen worldwide collaboration in promoting astronomy and astrophysics in schools. Brilliant high-school students are likely to be enthusiastic to study astronomy at the university level as part of the future generation of astronomy and astrophysics specialists, as a result of events like the IOAA.

Please Note: This page will be updated soon

Candidates are encouraged to maintain track of exam information by visiting their official website on a regular basis. The International Astronomy Olympiad and Astrophysics is the highest level astronomy and associated science competition for high school students from across the world, with teams from over fifty nations presently competing. IOAA 2022 will take place from August 14 to 12, 2022 (Expected). The 15th IOAA Olympiad will be held in Kyiv, Ukraine this year. In this post, we will examine the IOAA 2022 test format, curriculum, registration, results, and more.

Exam Stages in the IOAA

The five stages of the astronomy Olympiad are as follows:

Stage I: National Standard Examination in Astronomy (NSEA)

Stage II: Indian National Astronomy Olympiad (INAO)

Stage III: Orientation cum Selection Camp (OCSC) in Astronomy

Stage IV: Pre-departure Training Camp (PDT) for IOAA

Stage V: International Olympiad in Astronomy and Astrophysics (IOAA).

IOAA Syllabus 2022

The IOAA Syllabus details are given below

Theoretical and Practical Syllabus

Basic Astrophysics
Content Topic
Celestial Mechanics Newton’s Laws of Gravitation, Kepler’s Laws For Circular And Non-circular Orbits, Roche Limit, Barycentre, 2-body Problem, Lagrange Points
Electromagnetic Theory & Quantum Physics Electromagnetic Spectrum, Radiation Laws, Blackbody Radiation
Thermodynamics Thermodynamic Equilibrium, Ideal Gas, Energy Transfer
Spectroscopy and Atomic Physics Absorption, Emission, Scattering, Spectra of Celestial Objects, Doppler Effect, Line Formations, Continuum Spectra, Splitting And Broadening of Spectral Lines, Polarisation
Nuclear Physics Basic Concepts Including Structure of An Atom, Mass Defect And Binding Energy Radioactivity, Neutrinos (Q).
Coordinates and Times
Content Topic
Celestial Sphere Spherical Trigonometry, Celestial Coordinates And Their Applications, Equinox And Solstice, Circumpolar Stars, Constellations And Zodiac.
Concept of Time Solar Time, Sidereal Time, Julian Date, Heliocentric Julian Date, Time Zone, Universal Time, Local Mean Time, Different Definitions of “Year”, Equation of Time
Solar System
Content Topic
The Sun Solar Structure, Solar Surface Activities, Solar Rotation, Solar Radiation And Solar Constant, Solar Neutrinos (Q), Sun-earth

Relations, Role of Magnetic Fields (Q), Solar Wind And Radiation Pressure, Heliosphere (Q), Magnetosphere (Q).

The Solar System Earth-moon System, Precession, Nutation, Libration, Formation And Evolution of The Solar System (Q), Structure And Components of The Solar System (Q), Structure And Orbits of The Solar System Objects, Sidereal And Synodic Periods, Retrograde Motion, Outer Reaches of The Solar System (Q).
Space Exploration Satellite Trajectories And Transfers, Human Exploration of The Solar System (Q), Planetary Missions (Q), Sling-shot Effect of Gravity, Space-based Instruments (Q).
Phenomena Tides, Seasons, Eclipses, Aurorae (Q), Meteor Showers.
Content Topic
Stellar Properties Methods of Distance Determination, Radiation, Luminosity And Magnitude, Color Indices And Temperature, Determination of Radii And Masses, Stellar Motion, Irregular And Regular Stellar Variabilities – Broad Classification & Properties, Cepheids & Period-luminosity Relation, Physics of Pulsation (Q).
Stellar Interior and Atmospheres Stellar Equilibrium, Stellar Nucleosynthesis, Energy Transportation (Q), Boundary Conditions, Stellar Atmospheres And Atmospheric Spectra.
Stellar Evolution Stellar Formation, Hertzsprung-Russell Diagram, Pre-main Sequence, Main Sequence, Post-main Sequence Stars, Supernovae, Planetary Nebulae, End States of Stars.
Stellar Systems
Content Topic
Binary Star Systems Different Types of Binary Stars, Mass Determination In Binary Star Systems, Light And Radial Velocity Curves of Eclipsing Binary Systems, Doppler Shifts In Binary Systems, Interacting Binaries, Peculiar Binary Systems.
Exoplanets Techniques Used to Detect Exoplanets.
Star Clusters Classification And Structure, Mass, Age, Luminosity And Distance Determination.
Milky Way Galaxy Structure And Composition, Rotation, Satellites of Milky Way (Q).
Interstellar Medium Gas (Q), Dust (Q), Hii Regions, 21cm Radiation, Nebulae (Q), Interstellar Absorption, Dispersion Measure, Faraday Rotation.
Galaxies Classifications Based on Structure, Composition And Activity, Mass, Luminosity And Distance Determination, Rotation Curves.
Accretion Processes Basic Concepts (Spherical And Disc Accretion) (Q), Eddington Luminosity.
Content Topic
Elementary Cosmology Expanding Universe And Hubble’s Law, Cluster of Galaxies, Dark Matter, Dark Energy (Q), Gravitational Lensing, Cosmic Microwave Background Radiation, Big Bang (Q), Alternative Models of The Universe (Q), Large Scale Structure (Q), Distance Measurement At A Cosmological Scale, Cosmological Redshift.
Instrumentation and Space Technologies
Content Topic
Multi-wavelength Astronomy Observations In Radio, Microwave, Infrared, Visible, Ultraviolet, X-ray, And Gamma-ray Wavelength Bands, Earth’s Atmospheric Effects.
Instrumentation Telescopes And Detectors (E.G. Charge-coupled Devices, Photometers, Spectrographs), Magnification, Focal Length, Focal Ratio, Resolving And Light-gathering Powers of Telescopes, Geometric Model of Two Element Interferometer, Aperture Synthesis, Adaptive Optics, Photometry, Astrometry.

IOAA Exam Pattern 2022

The details of the IOAA test pattern are given below.

Duration Each paper 5 hours
Number of exams 2 papers
Type Theory, Practical

The theoretical portion of the IOAA is the first component. There are both lengthy and short questions in this section. Below is a list of the number of each sort of question.

Five rapid questions make up the total amount of short questions.

  • The number of intermediate-length questions – there are five intermediate-length questions in the paper.
  • The number of lengthy questions – there are two or three lengthy questions.
  • The duration of the event is 5 hours.

The practical paper, which makes up a large proportion of the IOAA, is broken down into numerous sections. The allocated set tasks, as defined by the subsequent question papers, may alter slightly. In most cases, students are assigned an assignment in one or more categories. A practical assignment focused on all four locations is also possible. The curriculum for IOAA contains information on each of these topics.

  • Observation
  • Paper-based practical problem
  • Compute-based problem
  • Planetarium simulation

IOAA Registration 2022

The IOAA Registration details are given below.

  • Students must be under the age of 20 to take the test.
  • There will be just one team of five contestants.
  • The members of the International Board serve as a point of contact for the countries participating in the International Olympiad on Astronomy and Astrophysics.
  • Each participating country is required to submit one squad to the school.
  • The external head will pass over to the organisers a list of candidates with their personal information (in English) from the schools verifying their presence, and the year of competition when each team arrives.
  • According to IOAA norms, teams of up to 5 students and two team leaders are not charged any participation fees. All participating teams’ local lodgings are paid for by the host country. The teams must, however, arrange for their own transportation from their home nation to the host city.

IOAA Result 2022

After the Olympiad, the IOAA results will be posted on the official website. Candidates may get their IOAA test results by visiting the IOAA’s official website or following the link. The IOAA 2021 Results show the candidate’s overall performance, rank, and a few other key details.

Frequently Asked Questions on IOAA 2022


What does IOAA stand for in full?

The International Olympiad on Astronomy and Astrophysics (IOAA) is an international competition in astronomy and astrophysics. It is an annual tournament in which youngsters from all around the world compete on a wide range of topics. The foundation strives to instil an enthusiasm for the topic of astronomy and astrophysics in students, in the hopes that they will continue to study and work in the field in the future.

What is the IOAA marking scheme?

The theoretical section is worth 50% of the entire grade, whereas the realistic portion is worth 50% of the whole grade (25 per cent data analysis and 25 per cent observation). Practical solutions should include theoretical study (plan and debate) as well as pragmatic implementation. The solution to each problem should include both an answer and a complete argument.

When will the admission cards be available?

The admit card release date will be issued a week before the examination. Candidates are recommended to visit the website on a regular basis for any relevant updates.

What papers must be included in the application form?

Candidates must submit their mark sheets, passport-size pictures, and a scanned signature while filling out the application form. While filling out the form, further details of papers such as aadhar card and voter id card number may be requested.

What is the IOAA examination’s first stage?

To compete in the IOAA, you must first compete in the NSEA, which is the first stage of the Astronomy Olympiad. Once a person qualifies at this level, he can access his scorecard through the internet. Only then will he be eligible to take the IOAA test.