NASA’s X-59 QueSST flew faster than the speed of sound for the first time, expanding into the supersonic portion of its flight envelope. NASA’s experimental X-59 QueSST (Quiet SuperSonic Technology) conducted its first supersonic flight on June 5, 2026, reaching a top speed of approximately Mach 1.1 (713 mph) and altitude of 43,400 feet. The milestone arrived […]