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US Space Force Deactivates DSP Nuclear Deterrence Satellites

October 12, 2026

2 min read

Key Takeaways

US Space Force deactivates last two DSP satellites.
DSP program provided nuclear deterrence for over 50 years.
Satellites detected ballistic missile launches and natural disasters.
Replaced by Space Based Infrared System and Next-Gen OPIR.

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Strategic Implications

The deactivation of DSP satellites may indicate a shift towards more advanced technologies in space-based surveillance, which could enhance the US military's ability to detect and respond to threats. The retirement of these satellites suggests a new era in space-based defense, which may have significant implications for global security and deterrence.

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What Happened

Legendary Program Ends After Five Decades Of Service

The US Space Force has deactivated the last two operational satellites in the Defense Support Program (DSP) constellation, marking the end of a legendary program that provided nuclear deterrence for over five decades. Launched in 1970, the DSP satellites used infrared sensors to detect ballistic missile launches and supported military forces in regional conflicts. The program was also used to detect natural disasters, such as volcanic eruptions and wildfires. The DSP satellites have been replaced by more advanced systems, including the Space Based Infrared System and Next-Generation Overhead Persistent Infrared. This development was first reported by Universe Magazine.

Source | Originally Published: October 12, 2026

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