Travelling from New York to London, a journey of approximate 3471 miles (5586 kilometers) across the Atlantic Ocean, takes about seven and a half hours by plane, depending on the wind. When aeronautical technology has some much, why should a journey like this be so long? Seems, researchers have been asking the same questions themselves. And, DARPA, the Air Force, NASA, Boeing, and Pratt & Whitney is supposed to test a new hypersonic aircraft today that can reach a speed of 4,500 mph within seconds. With the help of this new hypersonic aircraft, one could possibly travel from London to New York in an hour or less.