An expansive and breathtaking cosmic panorama, where luminous stars and swirling nebulae paint the night sky, cradling mountains bathed in gentle moonlight. Distant planets hover in the background, while ethereal, glowing rivers meander through the scene. A symphony of vibrant colors—blues, reds, and purples—dance across the landscape, creating a highly detailed and artistic masterpiece, ideal for a cosmic-themed wallpaper.