Before the 40th anniversary of the first moon landing ends, it's worth noting that Buzz Aldrin, the second man to walk on the Moon, is a leading advocate of allowing private property rights in space. I blogged about some of his ideas in this 2007 post, as well as considering the more general case for private property beyond Earth. Unfortunately, Aldrin's article on the subject (coauthored with Taylor Dinerman) no longer seems to be available online (though I excerpted some parts in the above post). This Boston Globe article provides a good summary of proposals to establish private property in space.