When planes exceed Mach 1 (the speed of sound, or about 767 miles per hour—1,234 kilometers/hour for those using the metric ...

An aircraft developed by Boom Supersonic ... jet to break the sound barrier this week. The XB-1 aircraft accelerated to Mach 1.05 at about 35,000 feet during a test flight Tuesday in the ...

American aerospace startup Boom Supersonic achieved a historic milestone by breaking the sound barrier with its XB-1 demonstrator jet. The monumental test flight was broadcast live from California ...

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U.S. startup Boom Supersonic sent its XB-1 jet through the sound barrier on Tuesday. It says the test flight over the Mojave Desert marked the first time any privately funded plane has hit the ...

The plane took off from the runway and headed up to the supersonic corridor located in the same area where Chuck Yeager broke for the first time through the sound barrier back in 1947. When it ...

Boom Supersonic's XB-1 aircraft has broken the sound barrier in a historic test flight over the Mojave Desert in the southwestern US. The XB-1 demonstrator completed its first supersonic flight on ...

supersonic, its XB-1 prototype breaking the sound barrier today in the skies over the Mojave Air & Space Port in California. With Chief Test Pilot Tristan Brandenburg at the controls, it reached a ...