Cape Canaveral, United States – The U.S. Space Force launched its final Global Positioning System (GPS) III satellite into medium Earth orbit early Tuesday aboard a SpaceX Falcon 9 rocket.
Liftoff from pad 40 at Cape Canaveral Space Force Station occurred at 2:53:25 a.m. EDT. The launch had been delayed one day due to poor weather conditions in the booster recovery zone.
The satellite for the GPS III-8 mission, officially designated Space Vehicle 10 (SV10), is also named “Hedy Lamarr,” honoring the Austrian-American actress and inventor whose frequency-hopping research contributed to technologies including GPS, WiFi, and Bluetooth.
USSF Col. Stephen Hobbs described the launch as a key milestone. “Today marks an important milestone for our unit and for the entire GPS enterprise. As we prepare to launch the final satellite in the GPS III block, we’re closing out a chapter that has defined the last several years of work for this team,” he said. “Closing out the GPS III block is not the end of the story, but rather it’s a foundation for what comes next. We’re excited to turn the page and continue advancing our mission with the GPS IIIF generation, bringing even greater capability to the joint force and to the global users who rely on this system every single day.”
The mission used Falcon 9 booster B1095 on its seventh flight, after previously supporting six Starlink satellite launches. The GPS III SV10 payload was enclosed in two fairing halves, one on its second flight and the other on its third, including prior use on the GPS III-9 mission in January.
SpaceX’s Anne Mason said this reuse supported mission assurance benefits for the Space Force program.
About 8.5 minutes after launch, the booster landed on the drone ship “Just Read the Instructions,” while both fairing halves were also recovered after splashdown further downrange.
The mission also marked continued use of Falcon 9 to launch GPS satellites previously assigned to United Launch Alliance under the National Security Space Launch program, following delays with the Vulcan rocket’s certification.
USSF Col. Ryan Hiserote highlighted the flexibility of the launch system agreements, noting that both SpaceX and ULA must approve any mission swaps between vehicles.
The SV10 satellite will join a constellation of 38 spacecraft in medium Earth orbit, with 32 currently active. After deployment, it will raise its orbit over 10 days before undergoing additional testing prior to operational handover to the Space Force.
The mission includes technology demonstrations such as optical cross-link laser communications and a new digital atomic clock to improve precision. These systems are intended to support future GPS IIIF satellites.
Lockheed Martin’s Fang Qian said the launch strengthens current GPS capabilities while preparing for the next generation of the system.