NASA test pilot Neil Armstrong was one of seven men secretly chosen to fly the X-20 Dyna-Soar, a reusable Air Force spaceplane cancelled in 1963 two decades before the Space Shuttle — and the orbital mission it was designed for is now flown by the Space Force’s X-37B and China’s Shenlong

NASA test pilot Neil Armstrong was one of seven men secretly chosen to fly the X-20 Dyna-Soar, a reusable Air Force spaceplane cancelled in 1963 two decades before the Space Shuttle — and the orbital mission it was designed for is now flown by the Space Force’s X-37B and China’s Shenlong – Space