/r/tech: Technological innovations and changes.

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SR-72: US secret hypersonic jet to allegedly break sound barrier in 2025 | Believed to be a top-secret project of the US Air Force, the SR-72 is touted to reach over 4,000 mph (6,437 kph), making ... (interestingengineering.com)

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The original was posted on /r/tech by /u/chrisdh79 on 2024-01-02 21:04:01.

Original Title: SR-72: US secret hypersonic jet to allegedly break sound barrier in 2025 | Believed to be a top-secret project of the US Air Force, the SR-72 is touted to reach over 4,000 mph (6,437 kph), making it the fastest plane ever developed.

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