If you’ve ever been out in the New Zealand wilderness, you might have heard a distinctive, low-frequency tone. It sounds less like an animal than the kick on an electronic drum machine. A look through ...

NASA’s X-59 supersonic jet completed its first test flight on Tuesday, flying at subsonic speeds of 230 mph over the desert ...

The jet is built in a unique shape to significantly reduce the sonic boom noise made when flights break the sound barrier.

Aero-optical effects arise when variations in the refractive index—prompted by turbulence, temperature gradients and pressure fluctuations within high-speed airflow—distort the transmission of light.

NASA's X-59 supersonic-but-quiet jet airplane soared over the Southern California desert on Tuesday in the first test flight of an experimental aircraft designed to break the sound barrier without all ...