The largest, most powerful rocket ever built is about to launch on its sixth test flight. SpaceX's Starship upper stage and Super Heavy booster are stacked next to the launch tower at the company's Starbase launch and test facility in southern Texas ahead of the vehicle's next mission, which is scheduled for tomorrow evening (Nov. 19).

SpaceX crews are planning for the sixth test launch of its Starship spacecraft and the world’s largest rocket.

SpaceX's Starship megarocket is set to takeoff on its sixth uncrewed flight test as early as Monday evening from Boca Chica, Texas.