I actually read the Outer Space Treaty when I was researching the legality of putting private kinetic hypervelocity weapons in space.
It's a bunch of communist "share the wealth" BS. You're not allowed to own property off earth, as it is "common heritage of mankind". BUT, you're not allowed to succeed from earth either, you remain the property of the country you launched from. Non-government peasants must have authorization and continuing supervision from their government, and all governments can claim the right to spy on you.