✉news ScienceSpace Policy first seen 7 h ago, last 59 min ago, peak #2
Space Force Retires Its Last DSP Satellites
Original: Defense Support Program: Space Force Retires Its Last DSP Satellites
The US Space Force has retired the final Defense Support Program (DSP) satellites, ending a decades-long era of infrared missile-warning spacecraft. The DSP constellation, first launched in the 1970s, detected missile launches from orbit and formed a backbone of American early-warning capability. Its retirement marks a full transition to newer missile-detection systems, and space policy observers are weighing what the shift means for US surveillance coverage.
Why now: The retirement of a historic satellite program marks the end of a Cold War-era system, drawing attention from space and defense communities.
US Space ForceDefense Support Program
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