Ghost Signals and Laser Shields: The Pentagon’s 500-Satellite Orbital Defense Net
In June 2024, Australian astronomers traced a 30-nanosecond radio burst to NASA’s defunct Relay-2 satellite, offline since 1967, likely caused by a micrometeoroid hit or decades of charge buildup. The LES-1 Lincoln Experimental Satellite, silent since 1967, transmitted again in 2012 after 45 years