庆祝约翰·格伦的历史使命
On February 20, 1962, NASA launched one of the most important flights in American history. The mission? Send a man to orbit Earth, observe his reactions and return him home safely. The pilot of this historic flight, John Glenn, became a national hero and a symbol of American ambition. NASA’s Multiple Axis Space Test Inertia Facility, or Gimbal Rig, was...