Blue Origin has identified the cause of the catastrophic explosion that destroyed its New Glenn rocket on May 28, 2026, during a routine engine test at Cape Canaveral Space Force Station in Florida. CEO Dave Limp announced on August 5 that the anomaly originated from the main oxygen valve on one of the seven BE-4 engines powering the rocket's first stage. This finding was confirmed through hardware recovery and inspections, followed by extensive component-level and engine hotfire tests to understand the failure mode and develop mitigations.