Topic: Defense Advanced Research Projects Agency


  • In Pictures Supersonic planes

    This undated artist's rendition shows the Falcon Hypersonic Technology Vehicle 2 (HTV-2), an unmanned, rocket-launched, maneuverable aircraft that glides through the Earth’s atmosphere at Mach 20 (approximately 13,000 miles per hour), designed by the military research group DARPA (Defense Advanced Research Projects Agency).

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