Why did blue origin explode?

A New Shepard rocket lifted off from West Texas in September 2022 carrying research payloads and no passengers. About a minute into the ascent, with the vehicle already supersonic, the BE-3PM engine failed. The capsule's solid-fuel escape motor fired automatically, pushed it clear of the booster and brought it down under parachutes with its experiments largely intact; the booster itself was destroyed. The abort system had been demonstrated in dedicated tests before, and this was the first time it saved a real flight.

The investigation, run by Blue Origin under Federal Aviation Administration oversight, traced the failure to the engine nozzle. Operating temperatures there ran higher than the design assumed, and the resulting thermo-structural fatigue let the nozzle fail, which in turn disrupted the thrust. The corrective actions were unglamorous: design changes to the nozzle and engine, revised inspections and additional qualification testing. The FAA closed the mishap investigation in 2023, and New Shepard returned to flight at the end of that year, first without a crew and then with passengers again.

Two further events get folded into the same question. In 2011 an early Blue Origin development vehicle was lost during a high-altitude test when it became unstable and the flight was terminated, which is routine attrition in a flight-test programme and was described openly by the company at the time. And in January 2025 the first New Glenn reached orbit and delivered its payload, but the first stage was lost during the landing attempt at sea. That was a failed recovery rather than an explosion on the way up, and the following New Glenn flight landed its booster intact. The distinction matters: losing a stage you were trying to reuse is a different kind of failure from losing the mission.