Google Translate tells me that Res Communis means “common goods.”  In any event, the blog of the same same discusses the legal aspects of human activities using aerospace technologies.  It’s published by the University of Mississippi School of Law’s National Center for Remote Sensing, Air and Space Law.  Lately you won’t find much in the way of substantive blog posts – it mostly consists of event postings, proposed legislation, new policies, and recent news on the blog’s subject.