The Defense Advanced Research Project Agency (DARPA) tried with little success on Thursday to fly its high-speed Hypersonic Technology Vehicle-2 (HTV-2), a mishap the agency chalked up to continued ...

The Defense Advanced Research Projects Agency (DARPA) has always been at the forefront of technological advancements. Its goal: to invest in national security technologies that are likely to lead to ...

An ultra-fast U.S. military drone that streaked across the sky at 13,000 mph and met its demise in the Pacific was doomed by the excessive heat of hypersonic travel, which literally peeled away the ...

United States military officials lost contact with hypersonic glider Falcon Hypersonic Technology Vehicle 2 (HTV-2), the fastest plane ever built, during a test flight over the Pacific Ocean on ...