Delta IV M+(4,2) • GSSAP 3 & 4

GSSAP (Geosynchronous Space Situational Awareness Program) is a series of space surveillance satellites developed covertly by the Air Force and Orbital Sciences to provide a space-based capability operating in the near-geosynchronous orbit regime supporting U.S. Strategic Command space surveillance operations as a dedicated Space Surveillance Network (SSN) sensor.

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