In the style of a vintage научная фантастика (sci-fi) book cover, a giant rubber ducky floats serenely through the rings of Saturn. The ducky, rendered in a retro-futuristic style, has small rocket boosters attached to its base. Saturn's rings are depicted with swirling, psychedelic colors. The overall composition is whimsical and surreal. The image is bathed in the soft glow of distant nebulae, creating a sense of wonder and exploration. Hyperdetailed illustration, 4k resolution.