United States Space Surveillance Network

The United States Space Surveillance Network detects, tracks, catalogs, and identifies artificial objects in Earth orbit, including active and inactive satellites, spent rocket bodies, and debris. It is operated by the U.S. Space Force under U.S. Space Command, with functions including predicting reentry, preventing false alarms in missile-warning systems, plotting current and future orbital positions, detecting new objects, mapping orbits, maintaining a running catalog, and determining ownership of re-entering objects. The network uses diverse sensors—electro-optical, RF, and radar—and provides space object cataloging, satellite attack warning, fly-over notifications, space treaty monitoring, and intelligence gathering, while modernizing to address increasing debris and complex orbital regimes.

AI named United States Space Surveillance Network from December 2025 to September 2026.