Technicians work to process the NASA’s Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) observatory on a spacecraft dolly in a high bay at the Astrotech Space Operations Facility near the agency’s Kennedy Space Center in Florida on Monday, Dec. 4, 2023. PACE will extend and improve upon NASA’s 20-plus years of global satellite observations of our living ocean, atmospheric aerosols, and clouds. It will also continue key measurements related to air quality and initiate an advanced set of climate-relevant data records. PACE will be encapsulated for launch aboard a SpaceX Falcon 9 rocket in early 2024 from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida.