Legarsky’s experience includes a stint at NASA’s Jet Propulsion Laboratory, where he worked on the Mars Advanced Radar for Subsurface and Ionospheric Sounding instrument currently orbiting Mars. His research has been funded by the National Geospatial-Intelligence Agency, the U.S. Army, the U.S. Navy, the MU Research Board, Raytheon Co., the National Reconnaissance Office, NASA, the European Space Agency, the Department of Defense and the National Science Foundation.