Explore the enigmatic world of dark matter in this 57-minute lecture by particle physicist Peter Fisher. Delve into the history of particle physics and the expanding universe, examining evidence from the Hubble Extremely Deep Field and various celestial objects. Investigate examples of dark matter's gravitational effects, including the Coma Cluster and Andromeda galaxy. Learn about the Standard Model of particle physics and its limitations in explaining dark matter. Discover cutting-edge research techniques like double beta decay experiments and the Cryogenic Dark Matter Search (CDMS). Gain insights into theoretical particles such as axions and their potential role in understanding the universe's hidden mass. Uncover the latest advancements in dark matter detection and their implications for our understanding of the cosmos.