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.

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.

Photographer NASA/Kim Shiflett
Location PHSF
John F Kennedy Space CenterKennedyKennedy Space CenterKSCSpaceportCape CanaveralNASArocket ranchFloridamulti-user spaceportpremier spaceportspace coastcapeNancy Grace Roman Space TelescopePayload Hazardous Servicing FacilityPHSFKSCKennedy Space CenterLSPLaunch Services ProgramGoddard Space Flight Centerpreparations