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Space-Based Infrared System
Trends
- 1Space Force Retires Final Cold War Missile-Warning Satellites●Space Force Retires Final Two Satellites From Cold War Missile-Warning Program
The US Space Force has retired the final two satellites from a Cold War-era missile-warning program, marking the end of a decades-old constellation that once formed America's front line of defense against nuclear attack. The move reflects an ongoing transition to more modern space-based infrared early-warning systems.
- 2Space Force Retires Its Last Defense Support Program Satellites▼Defense Support Program: Space Force Retires Its Last DSP Satellites
The US Space Force has retired the final Defense Support Program (DSP) satellites, closing out a decades-old infrared early-warning constellation that detected missile launches from orbit. The satellites, first launched in the 1970s, were gradually replaced by the Space-Based Infrared System. Observers are marking the end of an era in American missile-warning history as the legacy fleet is formally decommissioned.