The X-15 is the only conventional aircraft that has ever been flown above the “Karman Line” separating the Earth’s atmosphere ...

For nearly a decade, the X-15 - the fastest flying manned aircraft ever made - completed 199 missions at record breaking ...

It made the first manned flights to the edges of space and became the world's first piloted aircraft to reach hypersonic speeds, exceeding five times the speed of sound. The X-15 program was a ...