From left, mechanical engineer Gabrielle Ludwig, technician Alex Schaeffer, and mechanical engineer Mitchell Hamann install the Lunar Environment Monitoring Station (LEMS) instrument onto a test plate in a thermal vacuum chamber at Goddard Space Flight Center, Greenbelt Md., March 30, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry