Ключевые слова: abstract, astrology, astronomy, background, beautiful, black, blue, clear, cloud, cloudscape, cloudy, colorful, dark, dawn, dusk, evening, gradient, heaven, horizon, idyllic, landscape, light, mystery, natural, nature, night, orange, outdoor, planet, purple, scene, scenic, science, shine, sky, space, starlight, stratosphere, summer, sun, sunlight, sunrise, sunset, texture, twilight, view, violet, weather, winter,