Photography
Nasa. Rare. The North American X-15 was a rocket-powered hypersonic aircraft operated by the U.S. Air Force and the National Aeronautics and Space Administration as part of the X-plane series of jet aircraft. The X-15 set speed and altitude records in the 1960s, reaching the limits of space and returning with valuable data used in aircraft and spacecraft design. The X-15's official world record for the highest speed ever recorded by a powered aircraft, in October 1967, when William J. Knight flew Mach 6.72 at 31.1 m (102,100 ft), a speed of 4,220 km/h (3,000 mph). Circa 1970.period chromogenic print on "THIS PAPER MANUFACTURED BY KODAK" paper - Size : 20,3 x 25,2 cm
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