NASA's new supersonic plane
Most of us know that nasa is a organization who research's about space and space craft and many more.This organization has awarded Lockheed Martin a $247.5 million contract to build the supersonic aircraft.
It wants the aerospace company to refine, build and test the experimental aircraft -- known as the X-plane or "Low-Boom Flight Demonstrator" -- and deliver it to NASA's Armstrong Flight Research Center by the end of 2021.Next concord.
Info from [https://edition.cnn.com/travel/article/nasa-x-plane-supersonic-passenger-airplane/index.html]