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![Astronaut Steve Robinson on a spacewalk, August 2005](http://upload.wikimedia.org/wikipedia/commons/thumb/6/62/Sts114_033.jpg/300px-Sts114_033.jpg)
Credit: NASA
Extra-vehicular activity (EVA) is work done by an astronaut away from the Earth and outside of his or her spacecraft. EVAs may be made outside a craft orbiting Earth (a spacewalk) or on the surface of the Moon (a moonwalk). Shown here is Steve Robinson on the first EVA to perform an in-flight repair of the Space Shuttle (August 3 2005).