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航天员又称宇航员,是人类载人航天科学事业的尖兵。本刊将陆续介绍一些有关航天员的知识。这是第一部分,首先介绍的是什么人能当航天员和如何选拔航天员。
Astronaut, also known as astronaut, is a pioneer in human manned space science. This issue will introduce some of the astronaut knowledge. This is the first part, first of all to introduce what people can as astronauts and how to select astronauts.