Ключевые слова: alto, astronomical, astronomy, astrophysical, astrophysics, atmosphere, background, big, blue, calar, construction, cosmology, dome, equipment, explore, galaxy, graphic, hundreds, milky, mountain, night, observatory, outdoors, research, scenic, science, scientific, sky, solar, space, sphere, stars, sunset, system, technology, telescope, under, universe, view, way, white,