无论是航天技术,还是进入太空宇航员的数量,美国和俄罗斯都是太空中绝对的领跑者。据统计,全世界迄今共有400多名宇航员完成了太空飞行,其中一大半来自美国和俄罗斯(包括原苏联)。 前苏联宇航员尤里·加加林是进入太空的第一人。1961年4月12日,他乘坐“东方”1号宇宙飞船,绕地球飞行了108分钟后安全返回地面。就在加加林成功进入太空3周后,美国宇航员阿兰·谢泼德 Whether it is space technology or the number of space astronauts, the United States and Russia are the absolute leaders in space. According to statistics, so far, more than 400 astronauts have completed their space missions to date, mostly from the United States and Russia (including the former Soviet Union). Former Soviet astronaut Yuri Gagarin was the first man to enter space. On April 12, 1961, he took the “Oriental” spacecraft No. 1 and flew back to the ground safely for 108 minutes or so after flying around the earth. Just three weeks after Gagarin successfully entered space, U.S. astronaut Alan Shepard