/imagine prompt: Create a highly detailed cinematic poster of a lone astronaut standing on a glowing alien cliff at dusk, looking toward futuristic city on the horizon under a sky filled with rings, planets, and drifting dust. The composition should feel epic and symmetrical, with the astronaut placed in the lower third and the city dominating the background. Use dramatic volumetric lighting, neon blue and orange contrast, reflective suit materials, atmospheric haze, and realistic shadows. Add subtle floating particles, advanced sci-fi architecture, and a sense of scale. Leave clean negative space at the top for a title. Make it look like a premium movie poster, ultra-sharp, high contrast, print-ready, highly polished, no watermark, no blur. Aspect ratio 2:3.