The Oskar Klein Centre and Stockholm University will become a hub for axion research beginning now in 2020 thanks to a new Research Environment grant from the Swedish Research Council. A theoretical particle so far, the axion was introduced to explain why the strong force works the same both backwards and forwards in time and is also considered a serious dark matter candidate. The discovery of a cosmic axion background, or the ability to rule it out, would be an important result for both Standard Model physics and dark matter searches.