NASA is developing a quiet supersonic jet in order to replace the dreams of the Concorde with one that is significantly less deafening to the people down below.

The supersonic passenger plane, called the X-59 aims to fly faster than the speed of sound, at almost twice as fast as the Concorde.

Engineers are aiming to reduce the sound of the typical sonic boom to a 'sonic thump'.

NASA reported in August they have identified potential passenger markets in about fifty established inter-city routes, and it's hoped one route would see flights from New York City to London up to four times faster than what's currently possible.