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NASA moves a step closer to supersonic passenger flights
(www.cnn.com)
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this post was submitted on 26 Aug 2023
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Technology
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Interesting thought; I'd hope so. Maybe some material physics/chemistry research that makes some stuff cheaper for trains (I'm not an engineer so totally out of my depth here).
Efficient High-speed rails are already possible and have been since the 70s, it's not a lack of science that stops them from being a thing, it's a lack of desire from government officials being paid by private interests to do things less efficiently because people are getting paid.