Ключевые слова: alien signal, antenna, celestial, civilization, communication, contact, cosmos, deep, earth, electromagnetic, frequency, galaxy, horizon, internet, interspace, mission, observatory, physical, physics, planet, radar, radio, radio signal, radiophone, satellite, satellite dish, science, science fiction, scifi, ship, signal, sky, solar, space, stars, station, sundown, sunrise, sunset, technology, telephone, telescope, tv, universe, world,