Transgalactic space law

The framework for Transgalactic space law was established by the Galactic Space Boundaries Treaty of 4001, which was passed by The Big Four  and 77 independent Species of the M 0 Galaxy. This treaty establishes the boundaries of a Space faring society as 20 light years around any permanent occupied stationary object. A continuous border is established when these 20 light year boundaries overlap.

The Treaty made the surfaces of objects such as planets, as well as the orbital space around these bodies, the jurisdiction of the the sentient life form occupying said surface.

This treaty ratified by the Big Four and the Signatory independent civilizations of Free Space further specifies that a sentient native life form has possession rights over an invading species.

It guarantees the free travel of unarmed civilian ships and this travel right is supposed to be enforced by the militaries of the souvering societies claiming that space.

(There is of course a big difference between the theoretical laws and practice)