Rainbow City: Futuristic Space Odyssey

Prompt:  Create a vibrant, retro-futuristic image featuring an astronaut in a silver spacesuit with a white helmet seated on a yellow and red single-person hoverbike with round, orange cushioned seats. The hoverbike has a silver control panel with black dials and levers, and an antenna on the right side with red cabling. The astronaut wears grey gloves and boots and holds onto a yellow handlebar. The background depicts an expansive, utopian cityscape with various futuristic white buildings, some with domed roofs and elongated spires. There are multiple flying saucers and ships with sleek designs, some closer to the foreground and others near the city skyline. Above the city, a blue sky with scattered white and dark clouds is visible, and a rainbow arcs gracefully across the sky from left to right. The landscape includes flat, green and yellow fields stretching towards distant mountains on the horizon. The surface upon which the hoverbike is positioned is a smooth, wide road with a sharp vanishing point, suggesting a vast and organized urban environment.