Astronauts Edward H. White II (left) and James A. McDivitt inside the Gemini IV spacecraft wait for liftoff. The objective of the Gemini IV mission was to evaluate and test the effects of four days in space on the crew, equipment and control systems. Pilot Edward White II successfully accomplished the first U.S. spacewalk during the Gemini IV missi
Astronauts Edward H. White II (left) and James A. McDivitt inside the Gemini IV spacecraft wait for liftoff. The objective of the Gemini IV mission was to evaluate and test the effects of four days in space on the crew, equipment and control systems. Pilot Edward White II successfully accomplished the first U.S. spacewalk during the Gemini IV mission.Image Credit: NASA