Add Yahoo as a preferred source to see more of our stories on Google. The American company working to build the world’s fastest airliner hit a major milestone this week with its first supersonic ...

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An aircraft developed by Boom Supersonic became the first independently funded 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 ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. A sleek white aircraft became the first ...