SpaceX's next-gen Starship exploded shortly after liftoff.Screenshot via SpaceX webcastSpaceX launched its Starship mega-rocket for the seventh time on Thursday.It performed an epic booster catch for the second time but the Starship exploded shortly after.The launch marked the first flight of a new-generation Starship.SpaceX Starship mega-rocket has stumbled on the road to commercial use, unexpectedly dropping out of communications and exploding as it screamed toward space for its seventh flight on Thursday.The mishap occurred on the same day SpaceX rival Blue Origin, owned by billionaire Jeff Bezos, successfully launched its New Glenn rocket into orbit.What happened to the StarshipAfter liftoff, the rocket's Super Heavy booster heaved the Starship spaceship toward space, separated itself, and fell back toward Earth.