NASA's experimental X-59 jet breaks sound barrier twice, reaching Mach 1.4 in step toward 'quiet supersonic' technology
NASA and Lockheed Martin's experimental X-59 aircraft has broken the sound barrier twice, achieving a top speed of Mach 1.4. The feat could set the stage for "quiet" supersonic flight.
Live Science — 13 June 2026
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NASA and Lockheed Martin's experimental X-59 aircraft has broken the sound barrier twice, achieving a top speed of Mach 1.4. The feat could set the st
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