Envision a sprawling alien cityscape, vibrantly unfolding under a sky ablaze with the mesmerizing colors of an aurora borealis. This futuristic city, vividly captured in a detailed, high-resolution image, showcases towering buildings and massive, flying saucer-shaped structures that speak to an advanced civilization. The visual experimentation is heavily inspired by iconic 70s sci-fi art and artists like Moebius, John Harris, Yoji Shinkawa, and Alex Ross, blending elements of Japanese anime with a cyberpunk aesthetic. Dynamic neon lights in rainbow hues glitch through the air, enriching the scene with psychedelic and retro-futuristic vibes. A large space elevator and an enormous flying saucer dominate the city’s skyline, while color-drenched light streaks and energy lines seem to pulsate throughout the composition. This creates a canvas of dark greens interlaced with shades of yellow, orange, red, pink, purple, and blue, each adding a layer of complexity and intrigue that captures the essence of a MidJourney SREF index, guiding viewers through an extraordinary visual journey filled with high contrast, vibrant colors, and meticulous detail reminiscent of a vintage retro poster.