Watch: NASA’s pencil-thin X-59 supersonic jet spotted flying across US skies

NASA's experimental supersonic jet, the X-59, was captured flying over the United States on Wednesday, marking one year since its maiden flight. The distinctive pencil-thin aircraft embarked on a cross-country journey from California to Florida, with its progress widely documented on social media. NASA Administrator Jared Isaacman acknowledged one such video, praising the public's observation of the X-59's progress.

The aircraft, which spans 99.7 feet in length and 29.5 feet in width, is characterized by its exceptionally long, narrow nose that comprises nearly a third of its total length. This unique design aims to distribute shock waves generated during supersonic flight, thereby preventing them from merging into the loud sonic boom typically heard on the ground. The X-59 is propelled by a single engine positioned atop its fuselage, with noise directed upwards and shock waves minimized by the aircraft's smooth underside.

While the X-59 is an experimental research aircraft not intended for passenger transport, it is designed to fly at Mach 1.4, or approximately 925 mph, at an altitude of 55,000 feet. NASA plans to use the aircraft to gather data on the sound produced during supersonic flight and to monitor public responses as it flies over selected US communities. The agency aims to use the findings to assist regulators in assessing noise standards and the feasibility of permitting commercial supersonic flights over land.