Open World Astronomy Olympiad

The Open World Astronomy Olympiad (OWAO) is an international astronomy competition that tests students' knowledge in observational and theoretical astronomy. It is held in Russia every year.

2025 Russia, Sirius
Theory
Theory Problems Theory Solutions
Problem 1 (20 pts)
Celestial Pause Theory
Problem 2 (20 pts)
Winter Ensemble Theory
Problem 3 (20 pts)
Swing of the Spheres Theory
Problem 4 (20 pts)
Tides on a Rod Theory
Problem 5 (20 pts)
Above the Photosphere Theory
Problem 6 (20 pts)
Glimpse of GLIMPSE Theory
Problem 7 (20 pts)
Nothing to Do There Theory
Problem 8 (20 pts)
Stellar Blends Theory
Practical
Practical Problems Practical Solutions
Problem 1 (20 pts)
Chandrasekhar Says No Practical
Problem 2 (20 pts)
At the World's Edge Practical
Problem 3 (20 pts)
Beyond the World's Edge Practical
2024 Russia, Sirius
Theory
Theory Problems Theory Solutions
Problem 1 (20 pts)
Crossroad of Worlds Theory
Problem 2 (20 pts)
Satellite Tracking Theory
Problem 3 (20 pts)
Planet on the Spot Theory
Problem 4 (20 pts)
Let the Sky Fall Theory
Problem 5 (20 pts)
Almost Circumpolar Theory
Problem 6 (20 pts)
Jupiter in Sirius Theory
Problem 7 (20 pts)
Yet Another Pinwheel Theory
Problem 8 (20 pts)
Thirty Degress of Freedom Theory
Problem 9 (20 pts)
High Precision Guidance Theory
Practical
Practical Problems Practical Solutions
Problem 1 (20 pts)
Scattering of Stones Practical
Problem 2 (20 pts)
Support Service Practical
Problem 3 (20 pts)
Ephemeric Quest Practical
2023 Russia, Sirius
Theory
Theory Problems Theory Solutions
Problem 1 (10 pts)
Ceres Theory
Problem 2 (10 pts)
Straight Forward Theory
Problem 3 (10 pts)
Apparently Invisible Theory
Problem 4 (10 pts)
Hot Potato Theory
Problem 5 (10 pts)
Hide and Seek Theory
Problem 6 (10 pts)
Space Vodka Theory
Problem 7 (10 pts)
One Thousand and One Nights Theory
Problem 8 (10 pts)
Omega Sirius Theory
Problem 9 (20 pts)
Get Into the Loop Theory
Practical
Practical Problems Practical Solutions Practical Additional Files
Problem 1 (20 pts)
Kholshevnikov Metric Practical
Problem 2 (20 pts)
Metallica Practical
Problem 3 (20 pts)
Eclipse in Siberia Practical
2022 Russia, Sirius
Theory
Theory Problems Theory Solutions
Problem 1 (10 pts)
Slow down and shine Theory
Problem 2 (10 pts)
Mysterious Mercury Theory
Problem 3 (10 pts)
Anti-Earth Theory
Problem 4 (10 pts)
Red Skies Theory
Problem 5 (10 pts)
Follow the Shadow Theory
Problem 6 (10 pts)
Orbital Time Machine Theory
Problem 7 (10 pts)
Polar Wi-Fi Theory
Problem 8 (10 pts)
Perfect Nebula Theory
Practical
Practical Problems Practical Solutions Practical Additional Files
Problem 1 (20 pts)
Stone Ecliptic Practical
Problem 2 (20 pts)
RR Lyrae Practical
Problem 3 (20 pts)
Statistical Parallax Practical
Problem 4 (20 pts)
Nearby Cluster Practical