### Human: Send me a Stable Diffusion prompt representing retrofuturistic portrait of a man with in astronaut helmet### Assistant: retrofuturistic portrait of a man with in astronaut helmet, smooth transparent visor, reflective gradient, detailed space nebula graphics in background, close up, quint buchholz, wlop, dan mumford, artgerm, liam brazier, peter mohrbacher, raw, featured on artstation, octane render, cinematic, elegant, intricate, 8k, cyberpunk