Explore the fascinating realm of axion cosmology in this comprehensive lecture, delving into key topics such as axion miniclusters, axion stars, and the role of axions in inflation. Gain insights into cutting-edge research and theoretical concepts as presented by expert Luca Visinelli at the Galileo Galilei Institute. Over the course of one hour and three minutes, discover the intricate connections between axions and various cosmological phenomena, expanding your understanding of this crucial area in modern physics.