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Development of the U.S.'s first hypersonic military space plane, the HTV-3X Blackswift, is zooming forward, with plans for Boeing and Lockheed to work together on the project. When it's ready to fly (possibly as soon as 2010), the Blackswift will give the U.S. the ability to send a missile to any spot on Earth within 60 minutes. Check out the unique propulsion system that will take Blackswift above Mach 6. More »
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