Explore the fascinating concept of wave dark matter in this astrophysics seminar presented by Lam Hui from Columbia University. Delve into the physical motivations behind this theory, examining wave interference, vortices, domain walls, and phase halos. Investigate general scaling principles and their implications when gravity is turned off. Draw connections to condensed matter physics and uncover the astrophysical and experimental implications of wave dark matter. Gain insights into this cutting-edge research through a comprehensive outline, followed by a thought-provoking Q&A session.