I wonder what will happen if we find other planets that are habitable, or if technology reaches a point where the people can just go into space, and society or industry can thrive in space. Right now, space is declared as neutral, I think, because there isn't much anyone can do with it, and the advancements that one finds in exploring and studying it would seem better to benefit all nations - but I imagine as soon as people land on another planet, it's going to bring rise to another era of imperialism.
In the same vein, it's weird to think that sometime in the future, somebody may "own" the moon or something, or at least land on the moon.