DARPA has released video footage of the Falcon HTV-2 flight earlier this month, which ended unceremoniously after just three minutes when it lost contact with the vehicle. And, guess what, DARPA says the flight was a great success.
NASA's planning to spend $5 million a year over the next three years on the development of a hypersonic vehicle that could fly at five times the speed of sound.
US and Australian defence scientists have made a second test flight of a hypersonic rocket, with the aim of gathering data to commercialize the technology.