Two things explain why you aren’t jetting across the country at the speed of sound: cost, and noise. Forty-eight years after the Concorde made its first flight, supersonic commercial aircraft remain enormously complex and prohibitively expensive. They also generate an ...

The event is set to take place here at the Mojave Air and Space Port, Mashable reports. The first SpaceShipTwo, named Enterprise, disintegrated above the Mojave Desert during a 2014 test flight, killing one test pilot and leaving the other ...