Epic cinematic ultra-high resolution wallpaper featuring a futuristic spacefaring hero inspired by Ellen Ripley, rendered in stunning detail with a sci-fi background; the character, clad in a high-tech space suit, stands valiantly in front of a massive, alien spaceship, illuminated by distant stars and nebulae, her expression reflecting strength and determination, set against an awe-inspiring universe vista with vibrant colors and dynamic lighting to enhance dramatic tension.