Ключевые слова: astronomy, atmosphere, atmospheric, background, beauty, beauty in nature, blue, calm, calmness, clear, cloud, color image, colours, copy space, dark, dawn, day, dusk, environment, evening, gradient, horizon, horizontal, landscape, landscape scenery, light, moon, moonlight, nature, night, no people, outdoors, peaceful, scenery, scenic, scenics nature, serene, shadow, sky, soft, space and astronomy, star, sunrise, sunset, tranquil scene, transition, travel, twilight,