Quality Assurance engineer Lucinda Taylor unreels a power cord across the cleanroom floor at Goddard Space Flight Center, Greenbelt Md., April 21, 2025. This photo has been reviewed by export control and is approved for public release. NASA/Mike Guinto

The Roman Space Telescope's Spacecraft Bus and Integrated Payload Assembly is crane lifted inside the cleanroom at Goddard Space Flight Center, Greenbelt Md., June 12, 2025. This photo has been approved for public release. NASA/Mike Guinto

Roman Space Telescope team members inspect the primary mirror in the dark using flashlights and UV lights to help them see any contamination, inside the cleanroom at Goddard Space Flight Center, Greenbelt Md., July 2, 2025. The green glow of the room is due to a long exposure time, the green comes from a light on the left wall which indicates optimal airflow through the room. This photo has been approved for public release. NASA/Mike Guinto