Sierra Space is playing a growing role in America’s future missile defense strategy after receiving a $798 million agreement to build 18 next-generation satellites designed to detect and track missile threats from space. The satellites will become part of the Golden Dome defense network, a large-scale initiative aimed at creating a stronger shield against advanced missile threats. Using its Horizon spacecraft platform, Sierra Space will deliver satellites capable of providing early warning information and tracking data needed to identify potential threats before they can reach their targets. The system is expected to improve the speed and accuracy of missile detection while supporting future interception operations. The company’s involvement builds on its previous work under the Tranche 2 Tracking Layer program, where it has already progressed with spacecraft development and testing preparations. Sierra Space says its combination of advanced manufacturing methods, engineering expertise, and production capacity will help accelerate delivery while maintaining reliability. The Golden Dome project reflects the Pentagon’s effort to build a highly connected defense ecosystem in orbit, combining satellites, sensors, and interceptors into a unified network. With multiple companies contributing technologies, the program is designed to create a resilient defense structure capable of responding to evolving threats such as hypersonic missiles and advanced ballistic systems. As global missile technologies continue to advance, space-based surveillance has become a critical component of modern defense planning. Sierra Space’s latest contract highlights the increasing importance of commercial space companies in supporting national security missions.
