As he walked across the wind-swept city, he marveled at the architecture and wondered about the people who once lived there. He needed to return to his ship, he thought.
He felt a presence far behind him, and he dared not turn around. If he did, then she would ask whether he'd ever forgotten her over the centuries. He wasn't sure that he hadn't. And so, he kept walking across the barren planet, unsure whether he could ever bring himself to return to Earth.