The X-15 was a groundbreaking rocket-powered aircraft that set records still unbeaten today—including the fastest crewed ...

Still the fastest airplane ever flown, the North American X-15 earned its title 40 years ago, when on October 3, 1967 Air Force Major William “Pete” Knight flew the rocket-powered aircraft to ...

The Sunbirds will use Duel Direct Fusion Drive (DDFD) engines to power the rockets. (Representational) A revolution in spaceflight is in the offing. British startup Pulsar Fusion has unveiled its ...