2026
Current SeasonAOAC 2026 is in progress. Official round materials will be archived after completion.
Competition Archives
AOAC Archive
A permanent record of AOAC seasons, from official problem statements to post-competition editorials. Each season is added here once grading and publication are complete.
OAC 2025 Archive
Before AOAC, the competition existed as the Online Astronomy Competition (OAC). This archive contains the full materials from the 2025 season.