The Radar That Never Transmits: How Civilian Signals (TV, FM radio…) Are Becoming Part of the Air-Defence Sensor Network
Passive radar can detect aircraft without transmitting a radar signal of its own. By exploiting FM radio, digital television, cellular networks and potentially satellite communications, these systems are becoming an increasingly important layer of modern air defence.
Satellites That Repair Satellites: Why In-Orbit Servicing Has Finally Become Real
Satellites can already extend the life of other spacecraft, while robotic repair and refuelling are moving towards operational use. This Deep Dive compares the US, European, Chinese, Russian, Japanese, Indian and allied programmes — and explains the commercial, military and political stakes.