A U.S. aerospace startup called Stratolaunch has successfully conducted two test flights with the Talon-A, a reusable hypersonic aircraft capable of reaching speeds over Mach 5, or more than 6,100 km/h (3,800 mph).
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China tests hypersonic aircraft that could reduce the flight time between London and New York to less than 2 hours
Aerospace company Space Transportation conducted the first flight test of a hypersonic plane prototype named Yunxing, which promises to reach speeds of Mach 4, around 4,900 km/h, more than twice the speed of the famous Concorde.
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