An ultra-photorealistic, awe-inspiring double exposure

"An ultra-photorealistic, awe-inspiring double exposure artwork captured in breathtaking 8K resolution, high definition, and cinematic lighting. An astronaut floating in space merged with a deep-sea environment, where the helmet contains an entire coral reef ecosystem and cosmic nebulae blend with bioluminescent sea creatures. Dramatic contrast between cold space blues and warm underwater oranges creates visual tension."