The Space Plane’s Compelling History. The X-15 flew 199 missions from 1959 to 1969, all of which yielded a series of remarkable accomplishments in the annals of flight.

A new trailer for "Edge of Space," a short film about a daring X-15 pilot flying the rocket-powered experimental plane higher than any other piloted winged vehicle other than the space shuttle.

Captain Engle was assigned as one of two Air Force test pilots to fly the X-15 Research Rocket aircraft. In 1965, he flew the ...

Joe Engle, the last surviving member of the test pilots who skimmed the edge of space on the X-15 rocket plane in the 1960s and who later orbited the Earth on space shuttle missions, died July 10 ...

Joe Engle, who had the distinction of being the only astronaut to pilot an X-15 aircraft and a space shuttle, died in Houston on Wednesday, July 10. He was 91.

To see if that affects the X-59, NASA and Lockheed Martin put the plane on the tarmac right next to the F-15, at a distance of 47 feet (14 meters) at first, and then at 500 feet (152 meters).

Stratolaunch's Talon-A is a little smaller than a school bus, or about half the size of the X-15. Stratolaunch's Talon-A2 vehicle lands at Vandenberg Space Force Base, California.

The Space Plane’s Compelling History. The X-15 flew 199 missions from 1959 to 1969, all of which yielded a series of remarkable accomplishments in the annals of flight.