The $400 Million Blind Spot: What Sub-Centimeter Debris Means for the Business of Space

In October 2025, Spainsat NG-2, a satellite insured for $400 million, suffered an anomaly on its way to geostationary orbit that was publicly attributed to a space particle strike. In March 2026, a second Starlink satellite broke apart at 560 km, producing tracked fragments and, per the NASA Standard Breakup Model, hundreds of thousands of sub-centimetre pieces invisible to every ground-based radar in existence. These are not outliers. They are early indicators of a problem the commercial space industry has carried on its books for years without being able to measure or price it.

More than 99% of lethal debris in low Earth orbit sits below the 10 cm resolution floor of current tracking. Operators cannot tell whether a satellite failure was caused by a design flaw, a component issue, or a collision they never detected. Insurers cannot underwrite what they cannot quantify. And the environment is getting worse with every breakup event.

This session examines the commercial reality of sub-centimeter debris: what it costs operators today, why measurement has to come before mitigation, and how the first on-orbit collision insurance products and in-orbit impact data are beginning to change the way the industry thinks about orbital risk.