How many minutes passed before the first American astronaut completed a space walk?

The first American astronaut to complete a spacewalk was Ed White during the Gemini 4 mission on June 3, 1965. He exited the spacecraft approximately 12 minutes after the launch began. This event marked a significant milestone in space exploration, showcasing human capability to operate outside a spacecraft in the vacuum of space.

This 12-minute timeframe is crucial in understanding early space missions and their significance in astronaut training and techniques used for extravehicular activity (EVA). The successful execution of Moonwalks and subsequent space missions built on the foundational experiences gained during the Gemini program, particularly with Ed White's pioneering spacewalk, which helped refine technology and methods for future space operations.