A lone astronaut in a white space suit with black gloves and boots, standing on a rocky outcrop beside a dark brown horse, facing away from the viewer toward a vast, arid landscape under a stormy sky; behind them, another figure in a red hooded robe rides a similar horse, both positioned beneath a massive metallic ring structure that arches overhead, with a sleek, glowing spaceship hovering in the distance, rendered in cinematic sci-fi realism with dramatic lighting and detailed textures, grounded composition emphasizing scale and isolation.