LOS ANGELES, July 24 (Xinhua) -- SpaceX launched the 13th flight test of its giant Starship rocket on Friday. Starship lifted off from the company's Starbase facility in the U.S. state of Texas at about 5:52 p.m. Central Time. Shortly after launch, SpaceX confirmed stage separation. The Super Heavy booster has splashed down in the Gulf of Mexico as scheduled, according to SpaceX. The Starship upper stage