Starship fails to clear the tower
This is unlikely, but not impossible. SpaceX will be doing something a bit different this time around, and different can lead to uncertainties. The Raptor ignition sequence will begin at T-minus 3 seconds, and not T-minus 8 seconds, as was the case during the first launch.
Related article: What to Expect During SpaceX’s Second Starship Test Flight
Prior to the 11-million-pound rocket taking off on April 20, it hung there for what seemed like an eternity, the result of an intentionally staggered engine start. SpaceX is presumably hoping to avoid a recurrence and limit the amount of time the two-stage megarocket can scorch the launch mount prior to taking flight. Starship is expected to lift off at T-plus 2 seconds and then attempt to clear the tower, provided the accelerated engine startup sequence works, in addition to other launch requirements.
