International Day of Human Space Flight: April 12

April 12th is “International Day of Human Space Flight”.

On this day in 1961, the Soviet Union successfully launched the world’s first manned spacecraft.

The name of the ship is “Vostok 1”.

The astronaut “Yuri Gagarin” was on board.

・References
– https://tama.wtf/jp/society/today/international-day-of-human-space-flight
– United Nations: International Day of Human Space Flight