People in Space: The Pioneersby Mark Hughes
In 1961, Yuri Gagarin became the first person to venture beyond Earth's atmosphere. Since his journey, about 450 people – astronauts, civilians, and "space tourists" – have explored space. Follow this slideshow to learn about notable firsts for space exploration.
1 of 18
The first human in space was Soviet cosmonaut Yuri Gagarin on 12 April 1961. He orbited Earth once aboard the Vostok 1 spacecraft.
Photo source: NASA
NexT: Alan Shepard