Russian post issued a stamp to commemorate 50th anniversary of woman's first flight to space.
After the first successful flight of Soviet cosmonaut, the Soviet Union decided to send a woman astronaut into space. Initially the simultaneous flight of two women's crews was planned, but later this plan was abandoned in favour of the selection of one astronaut among five candidates. Valentina Tereshkova was selected astronaut number 1 among Soviet women.
The world's first woman astronaut went into space flight in June 16, 1963 on the "Vostok-6" spaceship from the "Baikonur" cosmodrome. Despite the physical discomfort Tereshkova endured 48 orbits around the Earth and spent almost three days in space, where she was keeping a logbook and making photographs of the horizon, which were later used for the detection of aerosol layers in the atmosphere.