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Dec 13, 2021, 9:56 am220 pts
Ars Technica
Enlarge / A full-power test of the BE-4 rocket engine in April 2019 in West Texas. (credit: Blue Origin) Blue Origin is unlikely to deliver two flight-ready versions of the BE-4 rocket engine to United Launch Alliance (ULA) before at least the second quarter of 2022, two sources say. This increases the…
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