Amazon billionaire Jeff Bezos is providing a sneak peek at his Blue Origin space venture’s BE-4 rocket engine, which could someday help power missions to the moon.
Today’s preview tweets comes a day before Bezos is expected to update his vision for commercial space missions at the Satellite 2017 conference in Washington, D.C. The BE-4 engine, fueled by liquefied natural gas, is expected to play a key role in that vision.
Bezos announced that the first BE-4 has been built at Blue Origin’s production facility in Kent, Wash., and the second and third are “following close behind.”
