Explore the role of stellar streams in probing the dark matter distribution within the Milky Way galaxy in this 32-minute conference talk by Sergey Koposov. Delve into cutting-edge research on how these elongated structures of stars can be used to map and understand the distribution of dark matter in our galaxy. Gain insights into the latest techniques and findings in this field, presented as part of the "Largest Cosmological Surveys and Big Data Science" program at the International Centre for Theoretical Sciences.