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Epic retro-futurist matte painting of an ancient alien observatory on a wind-carved plateau of a rust-colored exoplanet, composed as a symmetrical wide shot with the observatory centered beneath two distant glowing moons; rust orange, midnight blue, and sandstone palette, long blue-hour shadows, mysterious ceremonial atmosphere, restrained detail and controlled visual noise, no text, watermark, logo, border, UI, or interface elements.

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