We've heard about Jeff Bezos before: not only is he the billionaire who founded Amazon, but he also founded his own space venture, Blue Origin, more than 16 years ago.The company threw its hat in the ring back in 2014 to help produce the vitally important RD-180 engine, used to send the Atlas V rocket into space, completely in the US, offering to develop a liquid-fueled version of the engine. Now, Bezos recently updated about Blue Origin's process of building this next-generation rocket engine, known as the BE-4, that will be fueled by liquefied natural gas. No surprise here - additive manufacturing plays a part in building the BE-4! Read more at 3DPrint.com: https://3dprint.com/163811/additive-...g-blue-origin/