SpaceX’s Starship-Super Heavy performs a wet dress rehearsal tanking test in preparation for the 12th integrated test flight of the launch vehicle. Image: SpaceX

SpaceX is set to launch the third generation of its Starship rocket as soon as Thursday, May 21, from its company town in southern Texas, called Starbase.

The 407-foot-tall (124 m) two-stage rocket will fly on a suborbital mission dubbed Flight 12. The mission will see the Super Heavy booster (Booster 19) splashdown in the Gulf of Mexico and the Starship upper stage (Ship 39) meet its own aquatic end in the Indian Ocean.

Liftoff is scheduled during a launch window that opens at 5:30 p.m. PDT (6:30 p.m. EDT / 2230 UTC).

Spaceflight Now will have live coverage beginning about two hours prior to liftoff.