A science fiction trilogy is a series of three related stories that explore futuristic concepts, advanced technology, and imaginative worlds. These narratives often delve into themes such as space exploration, time travel, and the impact of science on society. Popular examples include Isaac Asimov's "Foundation Trilogy" and Frank Herbert's "Dune Trilogy". Trilogies allow authors to develop complex plots and characters over multiple books, providing readers with a deeper understanding of the universe they inhabit. Each installment typically builds on the previous one, creating a cohesive narrative that engages fans and encourages them to think critically about the implications of scientific advancements.