Ключевые слова: aerial, alien, antenna, array, astronomical, astronomy, astrophysics, background, blue, communicate, communication, contact, cosmos, data, digital, dish, electric, equipment, evening, exploration, global, instrument, network, observatory, optical, planet, radar, radio, radiotelescope, receiver, research, satellite, science, scientific, signal, silhouette, sky, space, sunset, system, technology, telecommunications, telescope, tracking, transceiver, transmission, white,