Yuri Gagarin, the Soviet cosmonaut who went down in history as the first person to go into space in 1961, had started the space age by touring the Earth's orbit on April 12 with the "Vostok 1" spacecraft.
This is why April 12 is being celebrated as the "International Day of Human Space Flight".
Kennedy Space Center, located on Meritt Island in Florida, US, has attracted a lot of visitors within the context of the International Day of Human Space Flight.
