Actually it is a guy that owns all planets in our system except the sun because it's a star. Don't remember his name but he claimed the rights on all planets in 1980. The countries worldwide decided that it's not legal to sell things from the space for commercial usage to governments but not for companies. Now this guy claimed the rights and really owns them after some court visits.
So I bought now 700.000 sqm of the moon with a certificate and all stuff like locationmap and so on. The NASA is allowed to land there or play tennis but not to build something for commercial use. So maybe one day I jump into a shuttle and pitch my tent beside E.T.
