The Vostok Program was the first human spaceflight program of the Soviet Union, aimed at sending astronauts into space. It began in the late 1950s and successfully launched its first mission, Vostok 1, on April 12, 1961, carrying Yuri Gagarin, the first human to orbit the Earth. The program included six crewed flights, demonstrating the feasibility of human space travel. The Vostok spacecraft was designed to carry a single cosmonaut and was equipped with basic life support systems. Each mission provided valuable data on the effects of space travel on the human body and contributed to the development of future space exploration programs.