Poul Anderson (1926–2001) was a prolific American author known for his science fiction, fantasy, and historical novels. His works often combined scientific accuracy with imaginative storytelling, such as in Tau Zero and The Broken Sword. Anderson received numerous accolades, including Hugo and Nebula Awards, and was named a Grand Master by the Science Fiction Writers of America. His stories frequently explored themes of exploration, human resilience, and cultural dynamics, leaving a lasting impact on speculative fiction.