Ключевые слова: 1961, aged, ancient, antique, astronaut, continent, cosmonaut, discovery, earth, envelope, equipment, exploration, flight, globe, helmet, historic, letter, mail, male, man, message, mission, old, orbit, philately, pilot, planet, postage, postcard, postmark, project, retro, russia, russian, science, seal, sky, soviet, spacecraft, spaceship, stamp, star, union, universe, ussr, vintage,