Blue Origin CEO says next-gen BE-4 rocket engine meets technical requirements
Blue Origin’s BE-4 rocket engine is on display in Colorado Springs. (GeekWire Photo / Alan Boyle) COLORADO SPRINGS, Colo. — For years, there’s been a big question surrounding the next-generation BE-4 rocket engine that’s being built by Amazon billionaire Jeff Bezos’ Blue Origin space venture: Will it be good enough for United Launch Alliance, a crucial …