International Day of Human Space Flight is being observed today. The day celebrates each year at the international level the beginning of the space era for mankind, reaffirming the important contribution of space science and technology.<br />'' <br />''On 12 April 1961, the first human space flight was carried out by a Soviet citizen Yuri Gagarin. This historic event opened the way for space exploration for the benefit of all humanity.<br />''<br />''<br />