Latest BE-4 engine test footage where we exceeded our Isp targets. We continue to exercise the deep throttling of our full scale 550,000 lbf BE-4, the reusability of our hydrostatic pump bearings and our stable start/stop cycles. More to follow from ongoing tests. #BE4 #NewGlenn pic.twitter.com/fw5zvtwpJ6

— Blue Origin (@blueorigin) January 8, 2018