Silentbarker
Class of United States spy satellites
From Wikipedia, the free encyclopedia
Silentbarker is a class of classified United States spy satellites for space domain awareness developed by US Space Force and National Reconnaissance Office.[1][2][3]
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In December 2025, USSF System Delta 89 announced that it was seeking a new satellite to replace the Silentbarker series.[4] The USSF has also said it intends not to partner with the National Reconnaissance Office (NRO) for the replacement.[5]