Blue Origin pins New Glenn explosion on BE‑4 engine valve fault and teams with NASA for Stennis testing

On May 28, 2026, Blue Origin’s New Glenn rocket exploded on Launch Complex 36 at Cape Canaveral during a static‑fire test. CEO Dave Limp later identified the cause as a failure of the main oxygen valve on one of the BE‑4 engines, confirming the anomaly through hardware recovery and inspections. Blue Origin is making small modifications to the valve that can be retrofitted to existing engines, with the updated parts expected by the end of the month, and is rebuilding the launch pad to return to flight before the end of 2026.

In a separate development, Blue Origin and NASA have signed an agreement to use NASA’s historic B‑Test Complex at the Stennis Space Center in Mississippi for hot‑fire testing of New Glenn’s upper stage. The partnership aims to validate upper‑stage performance and support the company’s lunar‑return goals, while leveraging NASA’s experienced workforce and infrastructure.

The incident also draws attention to the BE‑4 engine, which powers both New Glenn and United Launch Alliance’s Vulcan rocket, highlighting broader implications for U.S. commercial launch capabilities.