Celestial planetarium interior, harmonious color scheme, deep blues, rich purples, vibrant turquoise, stardust accents, glow-in-the-dark constellations, spherical dome ceiling, futuristic seating, interactive exhibits, immersive experiences, 360-degree projections, ambient atmospheric lighting, soft gradient transitions, realistic nebula textures, subtle starry night effects, shallow depth of field, 1/1 composition, symmetrical layout.