MEET OUR TEAM

Christopher M. Hearsey

Christopher M. Hearsey is the Founder & CEO of OSA Consulting, LLC. Chris has over ten years experience in the aerospace and nonprofit sectors previously serving as the Director of DC Operations and Corporate Counsel for Bigelow Aerospace and Deputy CEO and Chair of the Board of Directors for the Astrosociology Research Institute.

Chris also served as Special Assistant to the Director in the Office of Space & Advanced Technology at the US Department of State and has managed political campaigns at the state and federal level, including a run for Congress in Maryland in 2018. Chris holds a BA in Mathematical Economics & Political Science and minor in Physics from Temple University, a MS in Legal Theory from The American University, a MS in Space Studies from the University of North Dakota, and a JD with honors in Air & Space Law from the University of Mississippi School of Law.

As a student, Chris held a graduate fellowship in space history at the National Air & Space Museum in Washington, DC, and studied Public International Law at Downing College, Cambridge University.Since law school, Chris has served as a coach, advisor, and judge for the Philip C. Jessup International Law Moot Court Competition and as a student competitor, coach, advisor, and judge of the Manfred Lachs Space Law Moot Court Competition. Chris lives in Maryland with his family.

Nathan Johnson

Nathan Johnson is an attorney licensed in Washington, DC, and publishes the blog and podcast AstroEsq. He graduated with his Juris Doctor from the George Washington University Law School, and received an LL.M from the University of Nebraska College of Law in Space, Cyber, and Telecommunications Law. He worked at the FAA Office of Commercial Space Transportation during SpaceX’s first berth with the International Space Station, and for the US House of Representatives’ Committee on Science, Space, and Technology during deliberation on human spaceflight regulation. He has published articles on orbital debris removal, on-orbit liability, and outer space property rights. He is also the Regional Organizer for the Manfred Lachs North America Space Law Moot Court Competition.
Julie Jiru is the founder and President of
Julie is also the former SpaceX Counsel & Senior Contracts Officer, where she worked for 13 years, and is a member of the IISL.
Julie has a BA in Advertising from the University of Texas, a Juris Doctorate, summa cum laude, from the South Texas College of Law, and an LLM in Space and Telecommunications Law from the University of Nebraska.
Chris Tkach

Chris Tkach is a veteran of the United States Marine Corps. While serving overseas Chris worked with many NGO’s and other international organizations. Upon his return to the states he spent a decade serving his local populations as a firefighter and emergency medical technician. Chris received his education from the Ohio State University College of Engineering.​

Jonathan Kaley-Isley is a space lawyer and cybersecurity expert based in The Hague, Netherlands. He holds a BA from the University of Florida, a JD from the Illinois Institute of Technology and the Chicago Kent School of Law, and an Advanced LLM in Aviation and Space Law from the University of Leiden. His PhD research is on the use of satellite information as evidence in international courts.

Jonathan has spent his career at the intersection of law and emerging technologies, directing global information governance, cybersecurity, and privacy programs at Visa, Barclays, Blackrock, and Vanguard. He taught computer science and security at the graduate level at the University of Denver, He is the former Director of the Center for Computer-Assisted Legal Instruction, and the former CIO of the National Multiple Sclerosis Society. He is also a Certified Information Systems Security Professional (CISSP).

Jonathan directs the operations of the global organization, including the production of the Space Court Law Library, the work of our interns, officers, and rapporteurs, and the SCF academic journal.