via.q13fox.com
NASA captures ‘first’ images of supersonic shock waves colliding in flight
NASA has captured groundbreaking images of shockwaves from supersonic aircraft, the space agency said, as part of efforts to create a jet that flies faster than the speed of sound without producing sonic boom. Using newly upgraded air-to-air photographic technology that took 10 years to develop, NASA's ethereal images show for the first time the interaction of shockwaves from two supersonic planes in flight.