NASA's Lunar Trailblazer Fueled Before Launch

NASA's Lunar Trailblazer sits on its rotation fixture after being fueled and prior to being installed to the EELV Secondary Payload Adapter (ESPA) ring at SpaceX's payload processing facility in NASA's Kennedy Space Center in Florida in early February 2025. The ESPA ring is an adaptor used for launching secondary payloads on launch vehicles. Figure A shows the spacecraft mounted horizontally, in its launch configuration, to the ESPA ring. The mission's two science instruments are visible.