Prompt
Create a realistic portrait of Richard A. Muller, a middle-aged American physicist, professor, and author, born in 1944, with a distinguished and intellectual appearance, wearing attire suitable for a professor or scientist, possibly in front of a bookshelf or a background related to physics or astrophysics, reflecting his extensive work in fields such as climate change, cosmic microwave background radiation, paleoclimate research, supernova studies, and his notable books like "Nemesis" and "Physics for Future Presidents".
