The “axion” is a hypothetical elementary particle. If axions exist, they might be a component of cold dark matter. Cosmologists today believe only a fraction of our universe is made up of stars, planets, and living organisms. The other 95% of the universe is dark matter and dark energy. The cold dark matter theory describes how the universe went from a smooth initial state to the uneven distribution of galaxies and their clusters we see today. With Axion (2022) Christopher Bauder explores the ultimate horizon: outer space. This enormous temporary light show has been created specifically for deserts and other dusty environments. With its sprawling array of mirrors and spherical objects, it looks like a giant scientific device for space exploration or particle detection. But once inside, it is a reflection on the potential of axions, dark matter and the idea of the unknown.