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NASA, Lockheed Martin Reveal X-59 Quiet Supersonic Aircraft
(www.nasa.gov)
This is a most excellent place for technology news and articles.
Ftfy
What they reveal openly is usually from years ago. A couple aerospace friends are always like "yea, we heard scuttlebut about that about 5 years ago, so that means it was already a thing 10 years ago*, haha.