June 03, 1965Â Gemini 4 astronaut Ed White is shown here during his spacewalk extra-vehicular activity (EVA). This was the first spacewalk by a U.S. astronaut. It lasted 23 minutes. White initially used a gas powered gun to move about. After the first three minutes the fuel ran out and White maneuvered by twisting his body and pulling on the 8 meter long umbilical cord. The photographs were taken by commander James McDivitt.