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India enters 'Hypersonic Regime' with successful missile test
Hypersonic speed is generally accepted to be Mach 5, or 3,836.35 miles per hour in conditions of 20 degrees Celsius at sea level.
Hypersonic speed is generally accepted to be Mach 5, or 3,836.35 miles per hour in conditions of 20 degrees Celsius at sea level.
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