Lawyers In Space...
colonist writes "The Christian Science Monitor presents an interesting overview of space law. Some want space to be shared by all: 'Outer space is a province of all mankind. There is not, and should not be, any privatization of outer space. It is a common thing that should belong to all.' Some people have claimed parts of the moon or Mars. In response, a lawyer has claimed the sun, 'to show how ridiculous a property-rights system in outer space would be if it were based solely on claims unsubstantiated by any actual possession.' The Space Settlement Initiative wants official recognition of land claims made by those who establish human settlements on the moon or Mars."
...which is divided up between a handful of nations for scientific research, and by treaty, it belongs to the "common heritage of mankind." That, if I recall correctly from my international law studies, is the same term applied to space. Both Antarctica and outer space belong to everyone in the world for common scientific study and use.
Of course, the treaties around Antarctica would all go to pot if say, something like massive deposits of fuel oil or some other extremely profitable venture were discovered there...
It's safe to say the same about space, too.