Astronaut Edward H. White, pilot for the Gemini IV spaceflight, floats in space during the first spacewalk by an American June 1965. The extravehicular activity, or spacewalk, was performed during the third Earth orbit of the Gemini IV mission. White is attached to the spacecraft by a 25-foot umbilical line and a 23-foot tether line, both wrapped in gold tape to form one cord. In his right hand White carries a Hand-Held Self-Maneuvering Unit. The visor of his helmet is gold-plated to protect him from the unfiltered rays of the sun. Image Credit: NASA, and hence in public domain.