Ключевые слова: aerial, air, antenna, astronomical, astronomy, base, broadcast, building, city, communication, complex, contact, cosmic, cosmos, defence, discover, dish, electromagnetic, exploration, facility, galaxy, information, locator, media, military, network, night, observation, observatory, radar, radio, receiver, research, satellite, science, scientific, scientists, searching, security, signal, sky, space, star, station, system, technology, telescope, tower, war, warfare,