Explore fundamental theories of Dark Matter in this comprehensive physics lecture delivered at the prestigious Galileo Galilei Institute. Delve into cutting-edge research and theoretical frameworks surrounding one of the universe's most enigmatic components as Dr. Pavel Fileviez Perez examines various models and hypotheses explaining Dark Matter's nature, behavior, and interaction with ordinary matter. Learn about the latest developments in Dark Matter detection methods, experimental evidence, and theoretical predictions that shape our understanding of this mysterious cosmic phenomenon that makes up approximately 85% of the universe's matter content.