San Antonian Ed White was the first American spacewalker 56 years ago today
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Ed White, the first American astronaut to walk in space, is seen during the Gemini 4 mission in 1965. NASAShow MoreShow Less
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Astronaut Ed White, pilot for the Gemini-Titan 4 spaceflight, floats in space June 3, 1965. The San Antonian was the first American to walk in space. Show MoreShow Less
Before Neil Armstrong became the first person to walk on the moon in 1969, a San Antonian was the first American to walk in space on June 3, 1965.
During a four-day mission, Ed White floated in space for about 20 minutes attached by only a 23-foot tether and 25-foot umbilical, according to the Space Center in Houston.