Ключевые слова: abstract, atmosphere, background, beauty, blue, bright, clouds, constellation, dark, dusk, evening, finland, forest, galaxy, glow, heaven, high, horizon, landscape, light, luminescence, mesospheric, midnight, moon, mountain, nature, night, noctilucent, nocturnal, nordic, outdoors, phenomenon, scenic, shining, sky, space, starry, stars, strange, summer, sun, sunlight, sunset, travel, tree, twilight, view, water, weather, winter,