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Any time an astronaut gets out of a spacecraft(航天器) while in space, it is called a spacewalk. Astronauts go on spacewalks for many reasons. For example, experiments can be placed on the outside of a spacecraft. This lets scientists learn how being in space affects( 影响) different ...
The meaning of ASTRONAUTICS is the science of the construction and operation of vehicles for travel in space beyond the earth's atmosphere.
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Anytime an astronaut gets out of a spacecraft while in space, it is called a spacewalk. The first person to go on a spacewalk was Alexei Leonov. He was from Russia. The first spacewalk was on March 18, 1965. It was about 12 minutes long. I His spacewalk was on June 3, 1965. ...
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pictures of the Chinese flag on the moon made headlines(头版头条)in China and abroad following the landing of the Chang'e —5 spacecraft. ZhouChengyu, a 24-year-old from Guizhou Province, has also got a lot of attention. Sheis the youngest—ever space commander(指挥) in Wenchang, ...
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