Researchers have proposed a space-based detector capable of identifying nuclear warheads from orbit, according to Nature News. The system would sniff out characteristic radiation signatures, potentially enabling remote verification of disarmament agreements without requiring on-site inspections.

The concept addresses a long-standing challenge in arms control: confirming that nations are not secretly maintaining or developing nuclear arsenals. Current verification methods rely heavily on intrusive inspections, which are often politically contentious or logistically difficult to arrange.

The detector would operate by sensing neutron and gamma-ray emissions unique to warhead materials. Such technology could provide a persistent, noninvasive monitoring capability, though its sensitivity and resolution in the space environment remain unproven.

If successful, the system could reshape diplomatic negotiations by offering a neutral verification tool. However, deployment would require international consensus and significant technical refinement to avoid false positives or interference from non-weapon sources.

Critics caution that orbital sensors might be vulnerable to countermeasures or could be misused for espionage, potentially fueling rather than easing geopolitical tensions.