Ключевые слова: aerial, aeronautics, air, aircraft, airline, airliner, airplane, astronomical, astronomy, atmosphere, aviation, background, blue, celestial, contrails, copy space, crescent, crescent moon, dark, flight, fly, heaven, high, jet, lunar, modern age, moon, moonlight, nature, night, objects in the sky, orbit, plane, planet, pollution, satellite, science, shadow, silhouette, sky, space, speed, sphere, technical, tourism, transport, transportation, travel, universe, weather,