This website aims to help you prepare for the International Astronomy Olympiad (IAO) and the International Olympiad on Astronomy and Astrophysics. The constellation memoriser will train your familiarity of the night sky by asking on the relative positions of constellations to each other, as this is the best way to link all constellations into your mental mind map. As, for example, they may be more than one constellation north of another, the constellation that shares the longest northern border with the asked constellation is the answer. You can submit any feedback to me at [email protected]. You may like my main site too.