Scientific Connectivity in Space Sustainability Research: A Network-Based Study

Abstract

Space sustainability emphasizes the long-term, secure, and responsible use of outer space to ensure its continued accessibility for future generations. With the rapid expansion of space activities—driven by mega-constellations and increasing private sector participation—concerns over orbital congestion and space debris have intensified. In response, space sustainability has emerged as a global research priority. This study employs bibliometric and scientometric methods to explore the evolution of scientific research on space debris, drawing data from the Web of Science database for the period 2020 to 2024. Through collaboration and co-citation network analyses, the study identifies key research trends, influential contributors, and patterns of international collaboration. The findings provide a comprehensive view of the dynamic and interconnected research landscape supporting the global dialogue on sustainable space operations