This chapter explores sustainability in space. The chapter provides a sound overview of pertinent sustainability challenges, and the governance required for future space exploration. It also examines the issues such as space debris, its environmental impact, and highlights the importance of effective space traffic management. Moreover, implications of commercialising space are succinctly discussed, and pertinent ethical considerations are examined. The role of international communities in working together, thinking creatively, and adopting innovation are emphasised in this work. The chapter concludes with recommendations for a sustainable future in space, through which we stress the need to balance technological advancement with environmental and ethical responsibilities.