Blue Origin BE-4 rocket engine explodes during testing for ULA Vulcan rocket
- Engine exploded 10 seconds into a test at Blue Origin's Texas facility.
- Failure occurred on June 30 while prepping engine for ULA's Vulcan rocket.
- No personnel were injured in the incident.
- Blue Origin assessing root cause, working on remedial actions.
- Could impact Blue Origin's ability to meet engine delivery commitments.
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