Lunar property rights, Economist
"According to the United Nations Outer Space Treaty, signed by every space-faring country, no nation can claim sovereignty over Earth's lunar satellite. 102 countries have entered into to the 1967 accord; China joined in 1983. But space law scholars debate whether the Treaty actually implicitly prohibits, or allows, private ownership on celestial bodies. Some commercial companies, such as Bigelow Aerospace, are hoping to use the ambiguity of the treaty's language to their advantage. Founded in 1999 and based in Las Vegas, the firm aims to manufacture inflatable space habitats. It already has an agreement with NASA to expand the International Space Station in 2015 using its flexible modules, and also to devise a plan for a privately developed, NASA financed, lunar base architecture."