Key Points and Summary - Decades before the rumored SR-72 "Darkstar," America had already conquered hypersonic flight with the X-15 rocket plane. -In 1967, this remarkable experimental aircraft, ...

Stratolaunch has finally found a use for the world’s largest airplane. Twice in the past five months, the company launched a hypersonic vehicle over the Pacific Ocean, accelerated it to more than five ...

-Air-launched from a B-52, the X-15 reached a record-breaking speed of Mach 6.7 and flew high enough to earn astronaut wings for eight of its pilots. -While never intended as a weapon, the X-15 was a ...

The rebirth of commercial supersonic flight has kind of, sort of come to pass as Dawn Aerospace announces that its 16-ft (4.8-m) Mk-II Aurora rocket-powered aircraft broke the sound barrier with a ...

Dawn Aerospace has flown its rocket-powered aircraft past the speed of sound, the latest milestone on its path to its first commercial flights. During the test, which took place on New Zealand’s South ...

Radian Aerospace’s subscale prototype for its Radian One space plane sits on a runway in the United Arab Emirates. (Radian Aerospace Photo) Seattle-based Radian Aerospace has finished the first round ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and ...

Add Yahoo as a preferred source to see more of our stories on Google. SpaceX halted the launch of a Falcon 9 rocket on Sunday with 11 seconds to spare after a plane allegedly flew into restricted ...