Christa McAuliffe during a microgravity flight aboard NASA's KC-135 zero-gravity aircraft, January 8, 1986. Image courtesy National Aeronautics and Space Administration (NASA). (Photo by Smith Collection/Gado/Getty Images)
Christa McAuliffe during a microgravity flight aboard NASA's KC-135 zero-gravity aircraft, January 8, 1986. Image courtesy National Aeronautics and Space Administration (NASA). (Photo by Smith Collection/Gado/Getty Images)