Tralfamadore is a fictional planet from Kurt Vonnegut's novel, "Slaughterhouse-Five." It is inhabited by a race of aliens known as Tralfamadorians, who perceive time differently than humans. They see all moments—past, present, and future—simultaneously, which influences their understanding of life and death. In the story, the protagonist, Billy Pilgrim, is abducted by the Tralfamadorians and taken to their planet. There, he learns about their unique perspective on existence, which challenges conventional human beliefs about free will and the linear progression of time. The concept of Tralfamadore serves as a vehicle for exploring themes of fate and the nature of reality.