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Extravehicular activity
activity done by an astronaut outside a spacecraft / From Wikipedia, the free encyclopedia
Extravehicular activity (EVA) is when an astronaut or cosmonaut gets out of a spacecraft in outer space, then gets back in. "Extravehicular activity" usually refers to a spacewalk outside a spacecraft orbiting the Earth, but can also refer to a moonwalk on the surface of the Moon. Three Apollo astronauts made spacewalks between the Earth and the Moon while their spacecraft were returning to Earth.
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Astronauts from Russia, the United States and China have done EVAs.