The United States Space Force is currently building a near-Earth orbital active defense system with the help of the private company SpaceX’s on-orbit sensing and data advantage. This initiative not only reshapes the commercial landscape of space situational awareness but also signifies a new phase in the competition for space dominance among major powers, focusing on orbital data superiority.
On September 23, 2026, officials from the United States Space Force revealed that SpaceX has signed an agreement with the Joint Commercial Operations Center (JCO) of the Space Force. According to the agreement, SpaceX will have access to more detailed on-orbit target data from the high-precision catalog of the United States Space Command (SPACECOM). In exchange, SpaceX will provide the JCO with celestial tracking data obtained from its “Space Tracking System” (Stargaze). Although the government’s high-precision data is currently restricted to internal use within SpaceX and cannot be used for commercial profit, this arrangement is still significant as it marks the first direct exchange of SpaceX’s commercial on-orbit observation capabilities with the highest-precision orbital data of the U.S. government.
Previously, on August 28, 2026, analysis by the Quilty Space Institute, an aerospace industry research organization, indicated that SpaceX had secured contracts totaling approximately $1.077 billion from the U.S. government for the development of space situational awareness technologies related to the “Space-WATCH” program.
The “Space-WATCH” program was initiated by the Defense Advanced Research Projects Agency (DARPA) in 2023, aiming to utilize a large number of low-cost sensors in orbit and automated data fusion techniques to achieve real-time, continuous tracking of objects in low Earth orbit. This system aims to notify operators in case of abnormal situations and prepare for response measures.
This arrangement reflects a shift in the U.S. military’s demand for commercial space capabilities. Recognizing that relying solely on government resources is no longer sufficient to meet modern space warfare requirements, integrating private companies with significant on-orbit assets into the military domain has become part of strategic planning. With its extensive constellation of satellites, SpaceX naturally becomes an ideal choice.
Stargaze, SpaceX’s space situational awareness system, utilizes tens of thousands of star trackers on its satellite constellation to optically observe nearby orbital objects. Processing over 30 million transit events daily, Stargaze, despite not being able to track all targets in the public radar catalog, offers a significantly higher observation frequency than ground-based radars.
According to SpaceX, one of the advantages of Stargaze is that its star trackers can capture a large number of images of the same object within a certain time frame, enhancing continuous tracking of orbiting objects. This on-orbit sensing capability enables rapid detection of abnormal maneuvers by other satellites, forming the foundation for space active defense.
SpaceX’s Stargaze system and DARPA’s Space-WATCH program have a close technical continuity. While Space-WATCH aims to establish continuous tracking and automated data fusion in near-Earth orbit using distributed sensors deployed on commercial and government satellites, SpaceX is developing technology to operate the Stargaze space situational awareness system using star tracker satellites.
From a commercial perspective, these capabilities aim to reduce collision risks in orbit and maintain spaceflight safety. The near-Earth orbit has become increasingly congested, with debris from abandoned rockets, malfunctioning satellites, and collision-generated fragments continuously increasing. These fragments travel at speeds of several kilometers per second, with even micrometer-sized particles possessing enough energy to penetrate spacecraft armor. Traditional observational systems are powerless against objects below a certain size in diameter using ground-based radars.
The advantage of the Stargaze system is that it elevates detection accuracy and coverage to a new level, providing a viable technological means to prevent catastrophic chain collisions. By continuously updating orbital data, the system can accurately predict potential collision events. This extends the military significance of Stargaze beyond mere collision warnings, making its integration with the U.S. national security system highly significant.
In the face of technical breakthroughs by adversaries in anti-satellite weapons, co-orbital interference devices, and hypersonic vehicles in space warfare, the Pentagon urgently needs an all-weather, wide-ranging intelligence network to monitor near-Earth orbits. SpaceX’s commercial platform offers a ready-made solution.
SpaceX is currently establishing a complete cycle from “sensing” to “data fusion” to “orbit decision support.” Stargaze utilizes star trackers on its satellite constellation to acquire observational data, and through data exchange with the U.S. Space Force, SpaceX gains access to higher-precision on-orbit information.
Recent procurement activities by the U.S. Space Force further affirm this integrated defense strategy. In May 2026, the U.S. Space Force awarded SpaceX two contracts worth approximately $6.45 billion, with $4.16 billion allocated for the Space-Based Airborne Moving Target Indicator (SB-AMTI) program, which aims to establish a satellite system for detecting and tracking airborne threats from orbit; and $2.29 billion for developing the Space Data Network Backbone (SDN Backbone) to provide secure, high-speed satellite communication for global military sensors and weapon platforms.
This transformation of commercial space services into cutting-edge defense capabilities reflects the U.S. incorporating commercial satellite constellations into a larger military sensing and data system.
The tracking capability of the Stargaze system combined with missile defense satellites will form a detection network covering the entire near-Earth orbit. This network not only provides protection against space debris collisions but also possesses operational capabilities to identify enemy concealed maneuvers and track trajectories of hypersonic weapons.
Through the Stargaze system, the U.S. military can real-time tracks the orbit parameters of adversary communication and reconnaissance satellites, ultimately aiding in achieving space superiority, enabling the U.S. military to protect its own space assets while actively degrading enemy space-based information support capabilities.
The strategic value of this active defense system is particularly prominent in the Indo-Pacific region. As regional anti-access and area denial capabilities rapidly increase, all parties are stepping up the deployment of space sensing networks. In potential high-intensity conflict scenarios, operational units requiring stable, low-latency space data support are distributed across all domains, from continuous detection and tracking of maritime moving targets to the collaborative operations of unmanned drones and manned combat platforms, to the sharing of intelligence and target data between allied combat systems, space sensing and communication capabilities are becoming the foundation of cross-domain operations.
The development of the Space-WATCH program shows that DARPA is not bound by traditional defense procurement processes and seeks to integrate with the industry to ensure it does not miss critical technological windows. The rapid pace of space technology iteration far exceeds the bureaucratic system’s adaptation capacity, forcing the Pentagon to expand its avenues for acquiring technology and choose the path of integrating national defense requirements with mature commercial platforms. However, this approach also ties private enterprise’s commercial interests deeply with national strategy. The risk lies in balancing the relationship between enterprise interests and national policy when conflicts arise.
In conclusion, the integration of Stargaze with the U.S. military mission system highlights the unparalleled strategic and technological advantages that the U.S. military possesses in seizing the initiative for future space superiority. The true strategic value of Stargaze lies in transforming the vast, advanced, and mature commercial satellite constellation of SpaceX into a distributed space sensing network. Through high-frequency, low-latency orbital observations, it shortens the time from “detection” to “assessment,” providing a new data source for future U.S. space defense, joint operations, and cross-domain situational awareness.
This holds significant strategic implications for potential high-end conflicts in the Pacific region, preventing U.S. competitors from finding any symmetrical or asymmetrical technological paths to offset America’s competitive advantage in this domain for a considerable period.