Ключевые слова: abstract, astronomy, atmosphere, background, blue, communication, concept, connect, connection, continent, data, digital, earth, electronic, exploration, future, galaxy, global, global positioning, globe, gps, graphics, illustration, information, international, internet, light, line, map, navigation, net, network, orbit, planet, planet earth, satellite, science, signs, sky, space, sphere, star link, stars, system, technology, telecom, universe, web, wireless, world,