Ключевые слова: astronomy, audience, auditorium, chair, chairs, cinema, concert, concert hall, concert photo, conference, cosmos, crowd, education, empty, entertainment, event, event arena, event hall, festival photo, film, hall, interior, movie, music, music group, music photograph, nature, nobody, people, performance, person, planetarium, presentation, projector, red, room, row, science, seat, seats, show, stage, star, starry, stars, theater, theatre, universe,