Millennium Space Systems designs and builds spacecraft platforms, including the Resolute mid-class platform and Epoch satellites, and is producing multiple spacecraft for government missions.
Millennium Space Systems is a wholly owned Boeing subsidiary that designs, builds, tests and operates agile small-satellite and mid-class spacecraft for national-security and scientific missions. Its current ecosystem reach includes the U.S. Space Force as the customer for 12 MEO missile-warning and tracking vehicles, NASA for the TRACERS mission, SpaceX as the 2025 launch provider, and Boeing for EO/IR payload integration and expanded production. The key open question is whether Millennium and Boeing can deliver the Epoch 1 MEO vehicles on the revised 2026-27 schedule amid broader government findings of spacecraft-readiness and constellation schedule risk.
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Millennium Space Systems designs and builds spacecraft platforms, including the Resolute mid-class platform and Epoch satellites, and is producing multiple spacecraft for government missions. Millennium Space Systems is a wholly owned Boeing subsidiary that designs, builds, tests and operates agile small-satellite and mid-class spacecraft for national-security and scientific missions. Its current ecosystem reach includes the U.S. Space Force as the customer for 12 MEO missile-warning and tracking vehicles, NASA for the TRACERS mission, SpaceX as the 2025 launch provider, and Boeing for
Millennium Space Systems ranks 23 of 100 on the Space 100 (November 2026 edition) with a score of 80 out of 100, in Platforms (Satellites & spacecraft). Assessment by Frontier Tech Intelligence.
Airbus Defence & Space (rank 8), Thales Alenia Space (rank 12), Muon Space (rank 20), K2 Space (rank 22), The Exploration Company (rank 26), Redwire (rank 28).
Millennium Space Systems is based in El Segundo, California, United States. Stage: Subsidiary.
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