In a clean room at NASA's Jet Propulsion Laboratory in Southern California in March 2024, technician Nik Schwarz prepares the agency's Farside Seismic Suite (FSS) for testing. The cube-shaped payload contains two instruments that will gather NASA's first seismic data from the Moon in nearly 50 years and take the first-ever seismic measurements from the Moon's far side. FSS will operate continuously for at least 4½ months, working through the long, cold lunar nights. The two seismometers are packaged together with a large battery, a computer, and electronics inside a cube structure that's surrounded by several layers of insulation (the shiny, reflective material seen here) and suspended within an outer protective cube, which is in turn covered with a shiny insulating blanket. A technician is here attaching a stiffening brace to the bottom of the FSS outer cube structure. https://photojournal.jpl.nasa.gov/catalog/PIA26341