A vibrant retro-futuristic scene unfolds on an asteroid transformed into a bustling 1950s-style diner, where neon signs cast multicolored glows across the rocky surface. Sleek, retro flying cars zoom overhead, their trails of light painting dynamic paths through the darkness of space. The asteroid's surface is dotted with chrome tables and chairs, occupied by aliens and humans alike, basking in the ambient warmth. Stars twinkle in the vast expanse above, providing a captivating cosmic backdrop to this lively cosmic gathering place, with intricate details highlighting the interplay of retro design and futuristic elements in stunning 4K resolution.