“Cosmonautics Day is a holiday celebrated in Russia and some other former USSR countries on April 12. This holiday celebrates the first manned space flight made on April 12, 1961 by the 27-year-old Soviet cosmonaut Yuri Gagarin. Gagarin circled the Earth for 1 hour and 48 minutes aboard the Vostok 1 spacecraft. Coincidentally, it is also the anniversary of the first Space Shuttle launch that occurred 20 years after the historic Vostok flight.”
Nozzle rocket engines, museum exhibition (VDNKH, Moscow), bottom view.
Photo: “View from a height of 20,000 miles” by Michael Shmelev