This 20 kopeck Soviet postage stamp, issued in 1990, commemorates Cosmonautics Day, celebrated annually on April 12 to honor Yuri Gagarin’s first human spaceflight in 1961. The design features a cosmonaut performing an extravehicular activity (EVA) alongside a depiction of a space station resembling Mir, symbolizing the USSR’s achievements in human space exploration. The vivid space background highlights the technological prowess of the late Soviet era and the enduring legacy of its space program.