NASA's X-59 quiet supersonic research aircraft, touted as the successor to Concorde, is on the verge of its first flight. Designed to travel at Mach 1.5, or approximately 990 mph (1,590 kph), the X-59 could complete a nonstop journey from London to New York in about three hours and 44 minutes, a significant reduction compared to the typical seven to eight hours for conventional flights. Unlike Concorde, which flew at Mach 2.04, the X-59 addresses the long-standing issue of sonic booms by producing a quieter sound, making it more suitable for overland travel. Currently, the aircraft is undergoing final safety checks at the U.S. Air Force Plant 42 in Palmdale, California, where its systems are being evaluated. The initial flight will include a lower-altitude loop to confirm system integration, paving the way for a series of test flights that will progressively increase altitude and speed, ultimately aiming to break the sound barrier. NASA Armstrong emphasized the importance of safety in the flight-testing phase, mapping out each step from taxi to landing.