The 12th of April is the International Day of Human Space Flight. There are very good reasons why this day should be celebrated. Thanks to the very first human space flight, a new era started. On April 12th, 1961, cosmonaut Yuri Gagarin from the Soviet Union became the first human to travel to space, thus making Vostok 1 the first human spaceflight.
After the first human spaceflight, a new era started not only in space, but also on the earth.