On the same day SpaceX stacked a flightworthy Starship prototype to its full height for the first time, the company decided to swap one of the rocket’s three Raptor engines ahead of one last major pre-flight test. Curiously, at the same time as SpaceX engineers and technicians were removing Raptor serial number 39 (SN39) from … Continue reading SpaceX swaps Starship Raptor engine for one last pre-flight test