Space systems are shaped by the realities of many interacting parts, emergent behavior, adaptation, change, and uncertainty. These realities affect the capacity and performance of space systems that man greatly depends upon. Governance of space systems offering direction, oversight, and accountability for space systems is needed. However, there is a lack of a multidisciplinary understanding of space system governance. The main aim of this study is threefold: (i) to explore the space system domain from a complexity vantage point; (ii) to offer Complex System Governance (CSG) as a possible multidisciplinary approach to space system direction, oversight, and accountability, and; (iii) finally, to suggest several areas where CSG might offer contributions in addressing development of space system governance. The paper concludes with the particular space system challenges where CSG might provide useful insights.