David Brown is a space policy analyst, attorney, and former aerospace systems engineer. He spent the first decade of his career working on Mars mission architecture, planetary lander design, and closed-loop life-support research at major aerospace contractors, and the two decades since at the intersection of international law and space governance. His writing on off-world property rights, settlement law, and the politics of interplanetary society has appeared in SpaceNews, The Space Review, and the Journal of Space Law, and he has advised academic and industry conferences on the legal architecture of crewed missions to Mars. He holds degrees in aerospace engineering from the University of Michigan and international law from Georgetown University, and he is a member of the International Institute of Space Law. He has served as a volunteer contributor to the Hague International Space Resources Governance Working Group and as a board member of the Washington, D.C., chapter of the National Space Society. David lives in Boulder, Colorado, with his wife and two children. *The Martian Nation* is his first book; he is currently at work on a second, examining the economics of interplanetary trade.