Hugo Grotius’s principles regarding the freedom of the seas have intriguing parallels when applied to outer space — Just as Grotius argued for the open and shared use of the oceans, there is a growing consensus on the importance of maintaining outer space as a global commons.

1. International Collaboration

Outer space, like the high seas, is a domain where international cooperation is essential. The exploration and utilization of space require collaboration among nations to share knowledge, technology, and resources. By keeping space open and accessible, we promote joint efforts that benefit all of humanity.

2. Prevention of Militarization

Grotius’s idea of freedom on the high seas included restrictions on militarization to prevent conflict. Similarly, the Outer Space Treaty of 1967, a key framework for international space law, prohibits the placement of nuclear weapons or other weapons of mass destruction in space and limits the use of celestial bodies to peaceful purposes. This helps prevent the militarization of space and encourages its use for scientific exploration and benefit.

3. Equitable Access

Just as Grotius championed free access to the seas, there is a strong argument for ensuring equitable access to outer space. Space exploration and resource utilization should be available to all countries, not just those with advanced technology. This approach supports a more inclusive space economy and prevents the monopolization of space resources.