Blue Origin’s BE-4 rocket engine completes first hot-fire test

First hotfire of our BE-4 engine is a success #GradatimFerociter — Blue Origin (@blueorigin) October 19, 2017 People have derided Blue Origin for its focus on suborbital space tourism with the New Shepard launch vehicle, and that’s indeed been one of the company’s major pushes. But the space company has also been developing New …

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