The most powerful rocket ever built has now been stacked Starship 20 is being prepared for stacking atop Super Heavy Booster 4 at Starbase, Texas. The booster already has all 29 Raptor engines installed and the Ship has all three sealevel and all three Vacuum Raptors installed. This will complete the historic first stacking of a complete SpaceX Starship Super Heavy launch system. VIDEOS AT LINK...................