Imagine soaring from New York to London in less time than it takes to finish an average movie. NASA’s recent groundbreaking venture is aimed at revolutionizing transatlantic travel. They’ve embarked on the creation of a supersonic passenger jet that boasts a blistering top speed of Mach 4 (approximately 4,900 km/h). To put this in perspective, this not only doubles Concorde’s impressive Mach 2 (2,450 km/h) speed but also outpaces the famed SR-71 Blackbird spy plane that had a design speed of Mach 3.2 (3,920 km/h).