This paper explores selected long-term sustainability issues related to increasing
activities in outer space, with a particular focus on the economics of space debris.
It reviews trends of selected space sustainability issues and discusses a range of
possible policy actions. A notable policy response would be to strengthen space situational
awareness systems and data reporting structures, while addressing operator compliance
behaviour at both the national and international levels. Adequately addressing these
challenges will require a reinforced coordinated international approach, in addition
to increased collaboration with the private sector.