Shock diamonds form because of pressure difference of jet stream and atmospheric air. Present in supersonic exhaust plume of jet engines. They often repeat, creating a necklace of diamond shockwaves. #shockdiamonds #jetengine #supersonic #space #spacex #blueorigin #spacetechnology #spacetech #rocketengine #rocketengineering #physics #thermodynamics #spaceflight #letsgotospace #rocket #rocketscience #rockets #rocketry