Boca Chica (AP) – SpaceX has suffered another failed landing of Starship, its prototype Mars rocket. A camera on the rocket froze Tuesday, and dense fog in South Texas obscured views of the rocket coming apart right before touchdown. Other video showed debris raining down and explosions could be heard. That was the fourth full-scale stainless steel SpaceX rocket to launch on text flights more than 6 miles up. None has survived the landing. Each has exploded at touchdown, or shortly afterward. SpaceX referred to the latest failure as “a rapid unscheduled disassembly.”