苏联宇航员尤里·加加林于1961年4月12日成为第一个进入太空的人. Soviet cosmonaut Yuri Gagarin became first human in space on April 12, 1961.

1961年4月12日, 苏联宇航员尤里·加加林成为第一个进入太空的人类. 他完成了地球一周的轨道运行. On April 12, 1961, Soviet cosmonaut Yuri Gagarin became the first human to travel into space, completing one orbit around Earth. 这一历史性里程碑标志着太空竞赛的重大成就, 扩大了人类对宇宙的理解. This historic milestone marked a significant achievement in the Space Race and expanded humanity's understanding of the universe.