A stunning illustration of an astronaut exploring a lush, verdant alien world, capturing the essence of sci-fi grandeur with atmospheric depth. The scene is highly detailed with intricate elements, bringing a sharp focus to the vibrant alien flora under a surreal, colorful sky. Rendered in 4k resolution, this masterpiece incorporates imaginative enhancements, such as exotic plant species and unusual geological formations, all trending on artstation and refined with digital artistry tools for an immersive visual experience.