NASA's X-59 research jet is designed to travel faster than sound while muffling the resulting sonic boom. The space agency is exploring whether the plane's tech could also apply to future commercial airliners - allowing travellers to cross the Atlantic at speeds greater than 1,500mph.
They are testing new sound muffling tech so the sonic boom that is created will not affect populated areas. Currently, supersonic jets are banned due to the power of the sonic boom.
They will start testing in populated areas and gather data.