Governments today emphasize space systems as critical infrastructures. Many vital services, including communications, transportation, and maritime operations, depend on space systems. Cyber systems represent an essential component that enables effective functioning, configuration, and monitoring of technological space services. Space systems possess unique vulnerabilities and properties that attract the attention of hackers, and often with varying motivations. The private sector increasingly participates in the production of space technologies, and as a result of the differences in perceptions and priorities of governments and the private sector, handling the challenges of governance as it relates to the cybersecurity of space systems presents an avenue for research. Public-private partnership is one effective way of solving this governance challenge that public and private entities face. With several possible approaches to building a workable partnership between the public and private organizations, this paper offers a mixed approach with the potential to improve the security of space systems, mitigate vulnerabilities, and run effective campaigns against cyber threats.