Payload Hazardous Servicing Facility

A photograph shows the exterior of NASA’s Payload Hazardous Servicing Facility (PHSF) on Tuesday, April 21, 2026, at NASA’s Kennedy Space Center in Florida. Recently, technicians performed several upgrades to the facility ahead of the arrival of the agency’s Nancy Grace Roman Space Telescope, designed to provide deep, panoramic views of the cosmos, generating never-before-seen pictures that will revolutionize our understanding of the universe. Roman will undergo several prelaunch operations, including thermal protection closeout, cleaning, solar array work, and loading hydrazine propellant. The PHSF is one of the very few facilities where spacecraft undergo both hazardous fueling operations and delicate contamination control procedures.