A space marine standing tall in broad daylight, intricate armor design echoing the biomechanical elegance of H. R. Giger, rendered with the rich textures and dramatic chiaroscuro of an oil painting reminiscent of Rembrandt, vibrant celestial hues reflecting off brilliant metallic surfaces, expression intense and contemplative, cosmic landscape subtly hinted in the background, capturing a harmonious blend of futuristic sophistication and classical artistry.