Domed planetarium, celestial body projections, dark blue ambient lighting, starry night sky, comfortable seating areas, sound-absorbing materials, acoustic panels, curved interior walls, minimal echo, clear audio clarity, immersive audio experiences, 3D surround sound systems, gentle reverberation, intimate performance spaces, soft cushioning, velvety carpets, warm beige tones, subtle LED lighting, circular stage designs, astronomical visualizations, real-time data projections.