Lockheed Martin has wrapped up key environmental testing on the first of its next-gen missile warning satellites, keeping the program on track for launch as global missile threats continue to evolve.
Known as GEO Block 0, the satellite is designed to detect ballistic missiles, hypersonics, and other advanced threats from geosynchronous orbit, or about 22,000 miles (35,400 kilometers) above Earth.
It is built on Lockheed’s LM 2100 combat bus, a hardened spacecraft engineered to resist cyberattacks and counter-space weapons.
GEO Block 0 recently completed thermal vacuum and acoustic testing at the company’s Sunnyvale facility in California, simulating the extreme conditions of space and the intense vibrations of launch.
The satellite proved it can withstand those extremes and remain operational for years in orbit, according to Lockheed.
With environmental trials now complete, the space asset has entered final systems integration and interface checks with ground control, bringing it one step closer to launch.
“Next-Gen OPIR GEO will enhance America’s persistent, round-the-clock global surveillance and detection of missile threats,” said Joe Rickers, Vice President of Transport, Tracking and Warning Programs at Lockheed. “With the first satellite nearly ready to launch, Lockheed Martin stands ready to support the US government’s mission to protect the nation.”
Upgrading America’s Eyes in Orbit
GEO Block 0 is part of the US Space Force’s Next-Gen Overhead Persistent Infrared (Next-Gen OPIR) program, which will replace the aging Space Based Infrared System (SBIRS).
SBIRS has played a crucial role in missile defense, detecting hundreds of launches targeting Israel in 2024 and providing early warning ahead of Iran’s 2020 ballistic missile attack on US forces in Iraq.
The switch to Next-Gen OPIR reflects the growing urgency to counter faster, stealthier, and more proliferated missile threats.
With enhanced sensors, and persistent coverage, the new satellite is expected to tighten early warning timelines and boost the broader US missile defense network.
