Ключевые слова: 1987, aged, ancient, antique, astronomer, award, britain, celestial, constellation, diagram, discovery, envelope, famous, formula, galaxy, great, historic, invention, laureate, letter, mail, martin, message, nobel, old, philately, physics, planet, postage, postcard, postmark, prize, research, retro, ryle, science, seal, space, stamp, star, sweden, telescope, universe, vintage, winner,