Prompt
Generate a realistic image of a middle-aged American man in a NASA astronaut suit, with a background that represents his profession and achievements, such as a space-related scenery or a NASA facility; he should be depicted with a slight smile, wearing a NASA astronaut helmet in his hand, and have a few subtle hints of his engineering and astronomy background, such as a spacecraft model or star charts nearby; the style should be photorealistic and convey a sense of professionalism and authority.
