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The tail of NASA's supersonic X-59 aircraft sticks out from a hangar (at left). A bright, fiery exhaust extends from the tail. Visible in the superhot plume, which features vibrant hues of blue, purple, and orange, are distinct Mach diamonds—also known as shock diamonds.

Diamonds from NASA’s X-59

NASA’s X-59 lights up the night sky with its unique Mach diamonds, also known as shock diamonds, during maximum afterburner testing at Lockheed Martin Skunk Works in Palmdale, California. The test demonstrates the engine’s ability to generate the thrust required for supersonic flight, advancing NASA’s Quesst mission.

Image Credit: Lockheed Martin Corporation/Gary Tice

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