This lecture by the instructor provides an overview of space debris research, focusing on the identification, characterization, and monitoring of man-made objects orbiting Earth. The lecture covers the challenges posed by space debris, the importance of understanding the nature and sources of these objects, and the techniques used for surveillance and cataloging. It also discusses international collaborations, the role of space agencies, and the need for mitigation strategies to prevent the exponential growth of space debris, emphasizing the significance of taking proactive measures to ensure the sustainability of space activities.